The designer variable blocks serve as defined variables in the application to make it easier to work with data and control process logic. The following sections outline each available variable block type and provide a brief example of how the block can be used.

Variable is used to define an explicit variable. You can either define a new variable or reference one of the available variables in the context. Variables can be of any type (e.g., decimal, string, and Boolean) but are treated as strings.

This block is always used as an input to another block and cannot be placed by itself.

Block Configuration:

The Application Designer example below uses Variable to reference a PDA Configuration context variable:

Set Variable is used to set the value of a variable. If the variable does not already exist, it is created.

Block Configuration:

The Application Designer example below uses Set Variable to create a new custom variable:

Integer Variable can be used as an input into another block when you need to specify an integer value and do not need to reference it anywhere else.

The Application Designer example below uses Integer Variable:

Text Variable can be used as an input into another block when you need to specify a string value and do not need to reference it anywhere else.

When used with an Expression block or input, Text Variable replaces any variables enclosed in brackets with the current value.

The Application Designer example below uses Text Variable:

Use Boolean to indicate a True or False variable.

The Application Designer example below uses Boolean:

Use Known Event to choose a pre-existing Event ID by name. The Known Event options are automatically populated based on Events page in Business Central.

The known event options are automatically populated based on the Events page in Business Central.

The Application Designer example below uses Known Event:

Use Dialog Result to check for a dialog result by name rather than integer.

Available options are:

• OK (integer value of 1)
• Cancel (integer value of 2)
• Yes (integer value of 6)
• No (integer value of 7)

The Application Designer example below uses Dialog Result:

Evaluate Number is used to complete simple math expressions and then feed the result into other inputs.

Block Configuration:

The Application Designer example below uses Evaluate Number:

Evaluate Text is used to string replace variables into text expressions and then feed the result into other inputs.

Block Configuration:

The Application Designer example below uses Evaluate Text:

Note: Specific item tracking settings (e.g., purchase inbound, sales outbound) can also be referenced from the context.

The Application Designer example below uses Is any lot tracked:

Is any serial tracked is specially designed to return True/False if the current context has any Item Tracking Configuration that requires a serial number.

The Application Designer example below uses Is any serial tracked: