Exists

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Exists0.png

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

Exists1.png

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

Exists2.png

This is the Company databox with value populated

Exists3.png

Exists expression to check for a value

Messagetrue.png Messagefalse.png

Messages setup for TRUE and FALSE

Demonstration

Exists4.png

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

Exists5.png

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

Example Two

Exists6.png

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

Exists3.png

Exists expression to check for a value

Messagetrue.png Messagefalse.png

Messages for TRUE and FALSE as used in Example One

Demonstration

Exists7.png

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

Exists8.png

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