Changing labels units

Hello everyone
Does anybody know a way to change units on a GLAB text other than changing the GLAB´s layer distance units?
I want to change mm to meters "on the fly" without changing anything else
Thanks in advance

change units on LAYER with glabs

Thanks Kubik, but i mean other way... in a  particular Glab with some code...

Regards

change units on LAYER with glabs and you'll get correct result via code. np problem.