bool UpdateExternalVariables ( const [FRigVMGraphFunctionIdentifier](API\Plugins\RigVM\RigVMCore\FRigVMGraphFunctionIdentifier) & InLibraryPointer, [TArray](API\Runtime\Core\Containers\TArray)< [FRigVMExternalVariable](API\Plugins\RigVM\RigVMCore\FRigVMExternalVariable) > ExternalVariables )