I figured it out. Put on screen a DRO for X softlimit Max (DRO150) and one for X softlimit Min (DRO156). Place a button for each and have the button run VB
Dim Val
Val = GetOemDro(83) ' current X coordinate
Call SetOemDro(150,Val) ' Writes current X position into X max softlimit.
Use 83, 156 for X Min
Use 84, 151 For Y Max and 84, 157 for Y Min