Issues in creating disguise

[Friendly_Techpriest 0]

I downloaded ninostyle's Scoundrel Armor Replacer and wanted to create a disguise for an armband to use it permanently. When I use KTool and create a disguise following appereance.2da P_FEM_C_SML_01, it simply displays my current appearance. Using other values, like for example Sith_Fem_White or Sith_Fem_Black, correctly works. I gather I have to correctly point to the mod's override, but I'm not sure how I do it.