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

In a multi-round conversation, the current design of dify is that when the user passes the conversation_id parameter to the interface, the value of inputs can only be the value of inputs when the conversation is created.
Can a switch be made or an environment variable be designed so that developers can choose whether to update the value of inputs in the same conversation?
sometimes custom variables need to be updated in in actual use, such as some parameters of the environment, but currently if I want to update the inputs, I can only create a new conversation.

2. Additional context or comments

3. Can you help us with this feature?

• I am interested in contributing to this feature.