Module 7.10.2 of the Learning Path Rapid Developer

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Hi, I'm following the Learning Path, and have created a microflow which 'should' count and update the number of course attendees on Jimmy's courses.  I followed the instructions in the manual but got stuck at the moment i have to 'set the value to $count.  The moment i set the expression to $count is gives the following error: Unknown variable 'count'. Perhaps the variable is not in scope. When i use ctrl + space, $count isn't in that list either. I don't know what i am doing wrong. Maybe someone can help..
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Did you create the aggregate list Activity on the MicroFlow correctly?

 

It should look like this:

 

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Could you share  a screenshot of your MF?

I assume your issue is somewhere in your activities and the order you have modelled them combined with a split.

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