Weighting lookup in CA PPM Skills

Document ID : KB000104066
Last Modified Date : 03/07/2018
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The Skill is not a separate object in clarity. Yet, some fields like the Proficiency (RSM_RESOURCE_PROFLEV) and Interest (RSM_RESOURCE_INTLEV)  appear to be controlled by system lookups in the Resource Skills portlet.
Is it possible to change the values of the Weighting field in Resource skills page? 
What is the lookup associated to the Weighting field?
The Weighting values are hardcoded in CA PPM application.
Those values are not controlled via a lookup, but coded in the following file:
It is not recommended/nor supported to modify this file.