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Calculator is a gh-element that allows you to make expressions that will automatically calculate a value according to given conditions.

Functional Characteristics

This element allows you to automate various calculations. For example, it can be configured for payroll calculations. It can calculate not only number data. It can also count the amount of items sold by their status, which is set with radio button in items.

Element Options

The calculator has two types of options, which allow you to compose an expression to calculate the value and which allow you to customize the value in the field.

Field Settings

The first setting group contains standard field settings and additional settings that configures the displaying of the calculated value.

Settings of calculator field

Name Description
Precision allows to select the precision of the calculation result; details...
Prefix allows to enter the special prefix for the calculation result; details...
Suffix allows to enter the special suffix for the calculation result; details...
Persistent value allow to configure whether the value will be saved or not; details...
One time generation allows to make the stored value unchanged; details...


The current setting allows you to specify the accuracy of the calculation result. This is a drop-down list where you can select the number of decimal places.

The maximum available number is 3 decimal places.

It is also worth noting that the value is rounded in accordance with well-known rules. For example, we got this figure from our calculations:

The number for rounding

Since the thousandth number is less than 5, the hundredth number remains 6.

Rounding of the number

If we round to tens, the tenth number will be 2, because the hundredth number is greater than 5.

Rounding to the biggest number

With this setting, you can also set the number of decimal places for various values that require special precision, such as monetary values.


This setting allows you to enter a special prefix for numbers. This is useful when you need to customize a numeric field, for example, for a price field.

The prefix can be any character, word, number, or any string data.

Using the prefix

After entering the prefix, it will be displayed before each value of this field.

The Number prefix is not stored in the field value.


This is an additional setting where you can enter the custom suffix. That is, you enter the data that will be displayed after the number value.

This can be any string data, such as words or numbers.

Using a suffix does not affect the field value. It only displays the suffix after the value in the items.

Using the suffix

That is the suffix is not saved in the field value.

Persistent Value

By default, the Calculator element only calculates the created expression, but cannot save the resulting value. So, the current setting allows you to enable value saving.

Only when this option is enabled can the resulting value be saved in the field. After the update, the value will be updated.

One Time Generation

This option allows you to save the first generated value. That is, no matter how the value is updated through the variables, it will not affect the calculator value. This is used to prevent values from being updated.

One-time generation only only works with Persistent value.

But in fact, there is only one way to update the value - using the update button . This allows the user to update the Calculator value. If you update the calculation result, the value will be replaced.


This is the calculation settings where you can enter and configure the required expression. It can consist of constant numbers and various variables based on the values of fields or items.

Value calculator

Name Description
Constants allows you to enter the constant numbers; details...
Standard Calculator Buttons allows to enter the basic calculation element and numbers; details...
Field allows to select the value from which the value will be taken for calculation; details...
IF allows to use the value with the conditions; details...
Items count allows to use the number of items in calculation; details...
SUM allows to get the sum of all value of the selected field; details...
< allows to erase one element of the expression; details...
Clear allows you to erase expressions completely; details...


This is the set of buttons which allows you to enter the static numeric values. You can also enter decimals using the decimal point button.

Entering numbers

Standard Calculator Buttons

The calculator element offers basic math operations. That's why there are buttons with the appropriate symbols.

Mathematical operations


This function allows you to add a variable that gets a value from the field of the current item.

Field settings

Name Description
Field allows you to select the field from which value will be taken.
Interpretation Type allows you to select the type of the value. There are only two available types: Interpreted Value and Raw Value.


The current function allows you to add a variable with a condition. With it, you can get the value of a field or field value if the item meets a certain condition.

If settings

Name Description
Default Value allows you to enter the value that will be used in cases when the source field is empty. So this is the default value for the Field mode.
Mode allows you to select the mode of the IF calculation. That is, here you can choose which type of value will be used if the condition is met: Field If Value or Value
Value here you have to enter the value or select the field with the required value depending on the mode
Conditions allows you to set the conditions in which the Value will be used
Edit contains two buttons which allows you to edit or delete the value and its condition

Items Count

This function allows to use the number of items of the selected application in calculation.

Item count settings

Name Description
App allows you to select the application the item of which will be counted.
Add Filter allows you to add filters to determine which items will be taken in the calculation.. Different filters are used here to set the type of the items which you want to count.


This function allows you to get the sum of the values of a certain field from all items. It also allows you to set conditions for fields and sum not all values.

Sum settings

Name Description
App allows you to select the application items of which will be used in the calculation. All values for calculating the sum are stored here.
Field allows you to select the fields whose values will be summed. This field must contain numeric values, so select the Number element.
Add Filter allows you to add filters that will determine the items that will be used in the calculation. Thanks to this, you can get the sum of a property by a certain condition.

Clear Element

This button removes the last one element of the expression after clicking it.


This the button that allows to erase all the expression.

Element Style

In set of style settings, besides standard options, the calculator has only one unique setting, which slightly changes its interpretation.

Style of calculator element

General Settings

The general style settings of calculator contains one additional option that allows to expand the functionality of the element.

General settings of calculator style

Name Description
Update button allows to add the update button

Update Button

This is the button that allows to update the field value. It is only useful when the One Time Generation function is enabled.

Using the update button

This option allows the user to control the change of the calculator value. In addition, it allows the user to determine after which variable update the value will be saved.


The current element can be filtered by value using these filters:


The calculator look is quite similar to the simple number. Namely, its interpretation types display this element as a number.

Types of calculator interpretation


The default type of interpretation displays allows the result of calculations with all additional signs, such as prefix, suffix, and precision.


The second interpretation type displays the raw field value. Namely, it is without additional signs.

Value Format

The value depends of the Persistent Value setting. When that is off, calculator does not save the any value. In other case, the calculation result with all additional elements entered in settings is saved as a field value.

    "field_value": "4.00"

Data Model

    "data_model": {
        "arguments": [{
            "app_id": "27904",
            "sum_filters": []
        "expression": "5*6+ITEMSCOUNT()",
        "interpretation": [],
        "is_generate_once": 1,
        "is_persistent_value": 1,
        "precision": "2",
        "prefix": "",
        "suffix": ""
Name Type Description
arguments array contains the settings of each of the arguments of the expression
app_id string contains ID of the source application
sum_filters array contains all the filters that determine which values will be used in the calculations
expression string contains full expression of the calculation
interpretation array contains all element interpretation types
is_generate_once boolean shows whether the value will be updated automatically
is_persistent_value boolean shows whether the calculated value will be saved as field value or not
precision string contains number of values after the point
prefix string contains value of the prefix
suffix string contains value of the suffix