Rename values with regex

[widad_guerrida]

Hello,
I need to delete the numericals values in variables name :
CETAT_UGE_11 become CETAT_UGE
knowing that I have many variables like this, so i need a solution that works for all of them.

I started doing this : | rex result = column "([0-9]{2-3})" , with column is a column of a table which contains CETAT_UGE_11 and others.
but it does not work : Error in 'rex' command: The regex 'hfield' does not extract anything. It should specify at least one named group. Format: (?...).

Thank you for helping me

[to4kawa]

| makeresults
| fillnull CETAT_UGE_11 CETAT_UGF_12 CETAT_UGG_13 CETAT_UGH_14
| foreach *_*_* [ eval <<MATCHSEG1>>_<<MATCHSEG2>> = '<<FIELD>>'
| fields - <<FIELD>>]