What I want to get is this…

if pt1 = [50, 65, 0] integer in inches.

pt1a = [(pt1.x + 5), (pt1.y + 5), (pt1.z - 5)] if the syntax is right…

result is [55, 70, -5]

or if instead of inches I use the cm, being in Italy…

if pt1 = [50.cm, 65.cm, 0.cm] if the syntax is right. integer…

pt1a = [(pt1.x + 5.cm), (pt1.y + 5.cm), (pt1.z - 5.cm)] if the syntax is right…

result is [55, 70, -5] units of measurement in cm since I used .cm in pt1…

or even…

if pt1 = [50,0.cm, 65,0.cm, 0,0.cm] decimal number in cm… is it right to use the comma? 50,0.cm or you have to use the 50.0.cm

pt1a = [(pt1.x + 5,0.cm), (pt1.y + 5,0.cm), (pt1.z - 5,0.cm)] if the syntax is right…

result is [55,0, 70,0, -5,0]

thank you for your help…