PDF Automation - get text from a Clipping Region

Hello everybody,
I’m searching for a Solution for my Problem.

I have various PDF Files with the same content and i want to extract the values from a specific ClippingRegion (on the right side of the pdf) by using the Get Text activity. I have tried to use and manipulate the selector but it doesn’t work.

It seems that the get text activity doesn’t want to accept the values i’ve typed into Clipping Region.
If you have any other ideas how to get the Text on right side (0,008) please let me know.

The text will only appear, if the colour of the button is red.