Samplin rate or Sampling period variable

Dear all

I hope this finds you well. Is there a way to refer to the model sample rate in a block? What I am trying to do is to specify the length of a delay line which will depend on some parameters as well as the sample rate. Rather than having to change all the time the formula which derives the length of the delay every time the sample rate changes, I would like to use a variable, like fs or ts (the sampling period).

Thank you and Kind regards