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Power Platform Community / Forums / Power Automate / 'WindowInstance' must ...
Power Automate
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'WindowInstance' must be an integer value

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Posted on by CU09120831-1 4
Im exploring writing a list of column names into Excel
 
 
However after the first sucessful iteration, the 'Send keys' step throws an error
 
 
In the Excel, Column A is successfull written but failed for the other columns
 
Wondering whether there is any way to mitigate this? 
Categories:
Power Automate Desktop
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  • Suggested answer
    eetuRobo Profile Picture
    eetuRobo 4,339 Super User 2025 Season 2 on at
    You are mixing regular (non power fx) flow syntax with Power Fx flow syntax.


    Since you have Power Fx enabled flow you should never use precent signs like so %variableName%. In Power Fx its always with starting equal sign like so =variableName 

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