Hi Noreen, FP values occupy 11 positions on LCD if you use FB145. I have no hardware available to test but you could try using after FB145 a FB146 to display a string consisting of a few space characters positioned such that it overlap the digits you don't want to see. This is not a very elegant method with limited application. In the next version I will include a selection for 1, 2, 3, or max (as current) digits after decimal point in the GUI for FB145. You can also temporary modify the source code for your specific application, which is not to difficult as you only need to insert a subroutine call. Let me know if you require details.
I don't know how much work is involved to use X, Y positioning because there are different LCD layouts. Will have a look - but in the mean time you will have to study those datasheets!