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1. Is this request related to a challenge you're experiencing? Tell me about your story.

Now there are 4 issues for the output node of workflow:

1. you can add multi output nodes, but you only can add second output node by clicking the button of an edge.
2. the user require to add a variable after add the output node, maybe add a default variable is better
3. when two output nodes has a same name variable, one of it will lost, but there is no any hint
4. if there are two variables in a single output node, they will display in different line in the workflow result panel. but if the two vars in different output nodes, they will display mixed together

2. Additional context or comments

3. Can you help us with this feature?

• I am interested in contributing to this feature.