How to check if a variable is empty using an IF action

[JIMBOB]

I'm deleting a set amount of lines from a list every time the project loops.

What I want to do is have an IF action that checks if a variable is empty, take the red path, otherwise if not empty, continue the loop. I've tried adding code into the logical IF action which I'm going to assume is wrong. Can someone help me out please. Please see the image.

Also, Can I confirm logical actions is written in Javascript?

Thank you

 

[JIMBOB]

Nevermind. To anyone with the same question I simply compared it against another empty variable {-Variable.25 domains-} != {-Variable.Var1-}

 

[lokiys]

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