MATLAB: Creating multiwindow apps in app designer 2020a

app designerMATLABmultiwindow

hi,
I have been trying to create a multi window app just like the example in the documentation but its not working.
I think the problem is that i am not able to get my secondary app start function to be startFnc(app, mainapp, x, y) like the example. what I keep getting is startFnc(app, event)
and the error is too many parameters when I click th button to open secondary window
the code line at the error is app.dialogApp=newwindowname(app,x,y)
any advice?

Best Answer

The starup function in app 2 will have its own 1st input "app". You shouldn't pass that into the app.
Try this. 
app.DialogApp = New_window_name(app.x, app.y);
If that doesn't solve the prblem, please provide,
  1. The new full error message if one exists (copy-pasted or screen shot)
  2. The Startup function in app 2.
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