Set variable to '[blank]' using data picker

If I want to set a variable to blank, the data picker won’t allow this, it always says 'Field is required!'

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I can add a single space (which is not what I want) and then I have to adjust the code by removing the space in code view from
'business_ID_var.setValue(' ');' to
'business_ID_var.setValue('');'

This is not ideal. I may make several changes to an Action and may forget to go through this process which could screw things up.

Is there another way?
Can we remove the need for a field/value requirement?

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