Time variable, min / max values in report and RGM table

Time variable, min / max values in report and RGM table

Hi all.
I use time varibale from Siemens PLC. Imported as DINT in zenon with signal range min 0 and max 60000000. Measuring range min 0 and max 1000. So with this we get minutes. 
Now when we open RGM or report min and max ranges for variable are min -35791 and max 35791.
How to get measuring ranges here min 0 and max 1000?
One solution is to use INT varibale in zenon and convert it to time in PLC.
But we are concerned is there possibility to do it on zenon?

BR