Removing repeating special characters in info object for loading master data

Hi,

Is there a way to remove repeating characters from info object for loading master data in BPC?

My info object id is for example: TEST-01-01-01

I tried the following options in conversion file but they seem to remove only the 1st - not the consecutive ones

Internal = *-*

external = js:%external%.replace("-", "");

Or

Internal = *

extrenal = js:%external%.toString().replace(/\s+/g,"")

Thanks!