[RMX] Scaler limited to 999 units

[FAlthausen]

@TimAhrens
I noticed that the RMX-Scaler y-shift value is limited to 999 units which might be not enough for UPM 2048 or higher.
When I press ↑ on 999 the value switches to 1.
When I enter a value greater than 999 it is taken as floating e.g. 1.000.

So sometimes I had to do an extra shift afterwards.

[TimAhrens]

Hi Friedrich, thanks for reporting this. I can reproduce the problem here and will fix this in the next version.

[FAlthausen]

Great!