Hi @Anonymous,
I am afraid I don't know what language you are using, I want to know what type of variable you are initializing.
In the Value field of Initialize variable action, Dynamic content of the type mismatch is automatically filtered out.
It depends on the type of variable you initialized. Maybe the variable type you selected does not match the Dynamic content type of the Look column output, so it doesn't show in dynamic options
In addition, you may need to click on "See more" in the Dynamic content option list, and some Dynamic content may be hidden.
If you have to use this value, but Dynamic content can't choose, you could use the Compose action to store the value, then fill Compose-Output in Initialize variable-Value.
Note that if this value is not the type required by the variable, an error of type mismatch will occur.
Best Regards,
Barry