Set the IB_Session CheckForReservedTokens = true, may do it

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IB_Session code snippet

{: This global variable serves as a flag to tell if you want to make sure
and
check for reserved tokens automatically. Leaving this to false improves
performance. If you use reserved tokens and manually put quotes around them
it should still be fine to leave this set to false.}

CheckForReservedTokens: boolean = false;