8. Designer Variable Blocks
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 will outline each available variable block type and provide a brief example of how the block can be used.
Variable
The “Variable” block 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 (decimal, string, Boolean) but by default are treated as strings.
This block is always used as an Input to another block and cannot be placed by itself.
Block Configuration:
| Option | Description |
|---|---|
| item | The variable name. Use the drop down to select a previously created variable or to create a new one. |
Variable Example
Provided below is an example of using the “Variable” block to reference a PDA Configuration context variable.
Application Designer:
Set Variable
The “Set Variable” block is used to set the value of a variable. If the variable does not already exist it will be created.
Block Configuration:
| Option | Description |
|---|---|
| item | The variable name to set. Use the drop down to select a previously created variable or to create a new one. |
| <blank> | Place a variable block to get the value from |
Set Variable Example
Provided below is an example of using the “Set Variable” block to create a new custom variable.
Application Designer:
Integer Variable
The “Integer Variable” block 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.
Integer Variable Example
Provided below is an example of using the “Integer Variable” block.
Application Designer:
Text Variable
The “Text Variable” block 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.
The “Text Variable” when used in conjunction with an Expression block or input will replace any variables enclosed in brackets with the current value.
Text Variable Example
Provided below is an example of using the “Text Variable” block.
Application Designer:
Boolean Variable
Use the “Boolean” block to indicate a True or False variable.
Boolean Example
Provided below is an example of using the “Boolean” block.
Known Event Variable
Use the “Known Event” block to choose a pre-existing Event ID by name.
The known event options are automatically populated based on the “Events” page in NAV.
Known Event Example
Provided below is an example of using the “Known Event” block.
Dialog Result Variable
Use the “Dialog Result” block 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)
Dialog Result Example
Provided below is an example of using the “Dialog Result” block.
Evaluate Number
The “Evaluate Number” block is used to complete simple math expressions and then feed the result into other inputs.
Block Configuration:
| Option | Description |
|---|---|
| Expression |
The expression to evaluate. Should be a string variable with references to variable names inside brackets []. Use: “+” for addition, “-“ for subtraction, “*” for multiplication, “/” for division |
Evaluate Number Example
Provided below is an example of using the “Evaluate Number” block.
Application Designer:
Evaluate Text
The “Evaluate Text” block is used to string replace variables into text expressions and then feed the result into other inputs.
Block Configuration:
| Option | Description |
|---|---|
| Expression | The expression to evaluate. Should be a string variable with references to variable names inside brackets []. |
Evaluate Text Example
Provided below is an example of using the “Evaluate Text” block.
Application Designer:
Is any lot tracked
The “Is any lot tracked” variable is specially designed to return True/False if the current context has any Item Tracking Configuration that requires a lot number.
Is any lot tracked Example
Provided below is an example of using the “Is any lot tracked” block.
Application Designer:
Is any serial tracked
The “Is any serial tracked” variable is specially designed to return True/False if the current context has any Item Tracking Configuration that requires a serial number.
Is any serial tracked Example
Provided below is an example of using the “Is any serial tracked” block.
Application Designer:
