Define which morph targets will change their weights.
If the amount of morph targets is big, it is recommended to use this node (with a Mesh Morph Stack Application node) instead of using several Mesh Morph nodes. You can find more information in this "How to".
Mesh: The skeletal mesh which contains the morph targets to modify.
(Morph target name) Target: Optional, when this pin is not connected to a float or curve node, the morph target will remain unaltered.
Stack: Stack definition with all the linked morphs prepared to be apply.