can not access the output variable of Iteration node in chatflow

[leonzy]

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Dify version

1.01

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

In chatflow, Insert an Iteration node , set the output variable "result". You will see that the next node, for example, a LLM node， you can't find that "result" variable in the variable lists.

✔️ Expected Behavior

can access output variable of Iteration node.

❌ Actual Behavior

The Iteration node will not appear in the list of the next node, so you can't find the output variable

[dosubot]

I found some similar discussions that might be relevant to your issue:

1. Unable to Use 'text[array]' Output from Document Extractor in Iteration Step - This discussion is still open and might provide insights into handling array outputs in iteration steps ^[1].

2. Help “Unable to Reference Previous Step Output in Dify Chatflow Prompt Configuration: What’s the Issue?” - This is another open discussion that deals with referencing outputs from previous steps, which might be related to your problem ^[2].

3. Invalid built-in variables for iteration - This discussion is also open and addresses issues with built-in variables in iteration nodes ^[3].

Regarding your issue, the Iteration node in Dify's chatflow is expected to output only array variables (Array[List]). It processes each element in the input array sequentially, and the final output is also in the form of an array. Ensure that the input to the Iteration node is correctly formatted as an array, and check if the output variable is being correctly defined as an array ^[4].

If the issue persists, it might be related to known bugs or issues in the Dify codebase, such as IteratorVariableNotFoundError or InvalidIteratorValueError, which can affect variable passing between nodes ^[5].

To continue talking to Dosu, mention @dosu.

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