Run Integration API - Substitution Variable in periodname not recongized

I'm trying to orchestrate the execution of the EPM integrations remotely, and I've seen in the Oracle Documentation that is possible to pass as part of the periodname even the substitution variable.

Here the reference:

""Planning Substitution Variable—This is an extension of the previous Planning period name parameter whereby a substitution variable can be specified instead of the actual Year/Month member names.The convention is {Month#&CurYr}{&FcstMonth#&CurYr}; for example, {Jan#&CurYr}{&FcstMonth#&CurYr}.A combination of both actual member names as well as substitution variables is supported.""

However, when i try to use this option, i get back an error -> { "links": [], "status": 1, "details": "EPMFDM-ERROR: Start Period does not correspond to any period in the target Application Period Mapping / Global Period Mapping."}