To access newly created parameters in a Material Parameter Collection via the Set Scalar Parameter Value or Set Vector Parameter Value nodes, you must reassign the Collection to the node.
Also Reproduced in Main Promotable-CL-2487422
RESULTS: You will only have access to the originally created Parameters in the node drop-down until you reassign the MPC in the Collection input
EXPECTED: When you re-Compile the Level Blueprint, I would expect that the BP would update information from the MPC automatically.
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