Hi All,
I need your help with building a flow and getting an error. The end result of the flow should be that an email must be send to the person who filed the questionnaire (Ms Forms). This is with respect to their mentioned travel days, so in SP list I made a calculated column which calculates the no. days they filled in. So far the flow runs correctly except for the step sending the email, this is the error I am getting:

The reason I believe I am getting this error should be due to the following compose outputs (dynamic expression) $, see below.

The weird thing is, that only this output step changes and before saving and testing it is just as the Outputs also seen in the example. These are the steps power automate takes before adding it to the email.

Does someone know why the compose outputs expression suddenly changes to '$'?