I'm triggering events on the condition that variables are present in a data layer. However, when the variable has no value, it has been assigned an empty string, rather than being left out. Therefore, if we use the 'is defined' condition, the variable is always defined, so it fires the event regardless of if the variable has a value.
I'm wondering what the definition of the 'is populated' is and if it can be used to get around this?
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