The Jenkins Global Properties are not expanded in the p4 plugin like the job parameters are. We are using global properties to enable rolling branches and this feature is needed to make that possible.

Example:

Using a global property, ${PROPERTY_X}, with value "HELLO" in the workspace name and client spec is not expanded and yields:

Workspace Name:
WORKSPACE_${PROPERTY_X}

Client Spec:
//depot/module/${PROPERTY_X}/... //WORKSPACE_${PROPERTY_X}/...