Exists

Checks if a value exists in a databox. True is returned if there is a value. False is returned if the value is empty/blank

Example One

Write a value into Examples.Logical. Then do a databox read of the expression Examples.Logical.Exist If a value exists then display a message to say it's true.

Setup

This is the Company databox with value populated

Exists expression to check for a value

Messages setup for TRUE and FALSE

Demonstration

Select Exists = True to populate a value into the Examples.Logical databox.

As there is a value in the databox, the script follows the path that selects the message for TRUE.

Example Two

Don't write anything into Examples.Logical then databox read of the expression Examples.Logical.Exist If no value exists then display a message to say it's false.

Setup

Exists expression to check for a value

Messages for TRUE and FALSE as used in Example One

Demonstration

Select Exists = False to leave the Examples.Logical databox empty/blank.

As there is no value in the databox, the script follows the path that selects the message for FALSE.