Im a bit noob on this and im strugglin to creat it can u send more info on how to donit
Create Action > Apps > Locale/Tasker Plugin > TouchTask > Read Screen > On next page you will be taken to the plugin app, you don't need to setup everything just click
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On the next page you will set up the variables that are going to be saved. You need only element texts so you click + button next to that and name variable as you want.
You will need to use this action always if you want to get all current text of the screen, than you can use the if constraint.
That plugin also allows for trigger on same basis which means in trigger section > Apps > Tasker locale you could find the same option just under name "screen update" and use it as and trigger if some new text appears on the screen.