customize command

Hello everyone

I'm creating a personal command in my Italian version. I would a button which executes two operations:

1 - changing the layer of my selection

2 - active the stretching of +3 mm

I already did it with AutocadLT with the following command line:

^C^Cmodifica \\;proprietà;layer asse_fine;;lengthen i 3

^C^Cchange \\;properties;layer asse_fine;;lengthen i 3

But the programm allows me to make only one selection.

Could you help me?