Change dimensions in NAV2015

Hi!

Somebody can give me a Hint of how can i Do to change dimensions of a registered inventory lines in NAV2015?

I'm looking some information but i'm not sure of how can i made this changes.

I know that i have to use the functions of CU 408

The steps i Think is...
Do a "repeat" in the movements i want to update in table 32 and get the actual dimensionset ID
After that i must use GetDimensionSetID function to get the new set dimension ID
and finally run UpdateGlobalDimFromDimSetID to update the dimensions of the movements...

is right??