How to set a JavaScript Array variable in Typebot?

AAndré

Hi, I'm struggling to set an Javascript array variable in Typebot. The context is the following. I need to generate an array of messages to send to an API via Webhook.

The Webhook have the following body:

{
"model": "some-model",
"max_tokens": 1024,
"messages": {{messages_hist}},
"stream": false
}

I need to pass in "messages" the following Array:

[{"role": "system","content": "some system message"},{"role": "user","content": "some user message"}]

To achieve this I'm trying to 'Set variable' in the Typebot. A 'Custom' variable by the way, with this:

[{"role": "system","content": "some system message"},{"role": "user","content": "some user message"}]

The problem is that the Webhook does not work because(I think) what's inside the JS Array is being interpreted as a regular string:

["{"role":"system","content":"some system message"}","{"role":"user","content":"some user message"}"]

Any clues on how to handle Array variables in Typebot?

10 comments

BBaptiste

Indeed, Typebot variables value only accept strings and list of strings

BBaptiste

So if you set this value to a variable: [{"role": "system","content": "some system message"},{"role": "user","content": "some user message"}], it will be converted to ['{"role": "system","content": "some system message"}','{"role": "user","content": "some user message"}']

BBaptiste

I'm trying to think of a workaround for this

BBaptiste

Alright it should work:

Plain Text

{
    "model": "some-model",
    "max_tokens": 1024,
    "messages": {{={{messages_hist}}.map(JSON.parse)=}},
    "stream": false
}

Unfortunately it currently not working as expected so I just pushed a fix in production.

BBaptiste

I see that you are self-hosting so you'll have to wait for the next release (1st of Jan) to be able to do that

AAndré

Hi Baptiste, thank you! I was installing N8N to try to workaround the issue.

AAndré

I've tested in the production environment and it is working 🙂

IIgor

I'm on the latest version and I still can't parse it.

IIgor

{{=JSON.parse({{my_ob}})=}}

Not work for me

Attachment

BBaptiste

Can you show us what your body value looks like?

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How to set a JavaScript Array variable in Typebot?