Hi, Matteo
You can try the following code to copy aa to bb:
range aa = 1[1]:2[10];
range bb = 3[1]:4[10];
copydata aa bb;
Please refer to the following page for more detail of "copydata":
http://wiki.originlab.com/~originla/wiki2/index.php?title=X-Function:Copydata
Best Regard,
Jessie
Originlab Corp.