Error compiling dynamic control expression

We are getting below error while opening a page like customer card in Navision

Description:

 

Error compiling dynamic control expression: ‘GS45Active or GS48Active’ at index ‘11’. The error is: End of expression expected.

 

 

Reason: 

 

If we add multiple Booleans  in visible or any other property of any field in page like (GS45Active or GS48Active)  or (GS45Active and GS48Active) then we will get this error

Solution:

 

Make sure that operation characters are in capital like

(GS45Active OR GS48Active)  or (GS45Active AND GS48Active)