Webi Prompt shows only 'Key' for default values set by Bex Hierarchy node variable (customer Exit)

I have a Webi built on Bex using BICS connection. Bex have Hierarchy node variable (customer Exit) to default hierarchy node for prompts based on some conditions. All works fine and hierarchy prompt defaults to correct values. But issue is default values in Webi prompt shows only 'key' of the hierarchy node and not the 'text' of node . Bex Analyzer shows default values correctly as text but not able to get text in Webi prompts.

Help !!

Thanks,

Tanveer