Unusual Variable Behavior

Hello everyone! I'm a fairly new user of callin.io, having created about 8 moderately complex workflows.

However, today I've run into a rather strange issue, and I'm trying to pinpoint its origin.

I'm making a POST request to ElevenLabs to set up a voice agent.

I consistently test to confirm functionality using static values while constructing my JSON body.

One of these parameters is the voice_id.

A static value for the voice_id works without any problems, but when the same value is supplied via a SET node, I receive an error stating "This voice ID doesn’t exist".

I've attempted to convert the variable to a string, but the issue persists.

Has anyone else experienced a similar problem, and if so, how did you resolve it?