Set dynamic clipping region

hi, im trying to click a specific region of an application because i cannot rely on the selector. i want to click some element dynamically using clipping region. the regions are (56, 256, 56, 256), (56, 347, 56, 347), (56, 438, 56, 438), etc. there is 91 difference in 2nd and 4th number. How can i add the 91 dynamically to the 2nd and 4th number ?

Maybe this may help: