Unable to open expression builder
When using the online exercise system, the expression builder never opens for me. Although so far I have not had to use this feature, it would be nice to play around with it while I am doing the course.
For example, I wanted to try to use a boolean expression in a decision shape to make a step conditional on a parameter from a data page (instead of using a when condition via the "configure step behaviours" dialog). Unfortunately, without the expression builder it is next to impossible to know if the expression I am writing is syntactically correct and I have no idea what it is actually trying to evaluate.
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