[FRigVMExternalVariable](API\Plugins\RigVM\RigVMCore\FRigVMExternalVariable) GetExternalVariableByName ( const [FRigVMExtendedExecuteContext](API\Plugins\RigVM\RigVMCore\FRigVMExtendedExecuteContext) & Context, const [FName](API\Runtime\Core\UObject\FName) & InExternalVariableName )