[dog:cat:0.5] makes comfyui crash.

[axior]

Hello,

I am having an issue with your node, in this simple workflow I am using "[dog:cat:0.5]" as a prompt which should generate a dog for the first half of steps, and a cat for the second half, but it does not work and gives back this error . I have tested the PromptControl node to check if it was some node update issue and it gives the same exact error. Maybe it's an issue introduced in recent comfyui updates?

only the format [dog:cat:0.5] does not seem to work, while [dog|cat] correctly alternates between generating a dog and a cat each step.

Using [dog:5] or [dog:0.5] also gives the same error: float() argument must be a string or a real number, not 'Tree'