How to evaluate specific symbols from Unreal Engine.

Background/Situation

On Windows, while trying to evaluate symbols that are missing in the current module (that is being debugged at the moment), the message Identifier is not available in, possibly due to compiler optimizations can appear. | For example: Identifier 'ToString()' is not available in 'FKey', possibly due to compiler optimizations

Question

Why doesn't it evaluate? FKey::ToString exists in InputCoreTypes.h in FKey struct declaration.

Answer

Evaluation on windows depends on the context - frame, module (dll). Different dll have different available symbols for evaluation. Windows may lookup symbols only in current dll. To look up in another module, the context operator should be used.

For example: {,,UnrealEditor-InputCore.dll} Params.Key.ToString() == L"E"