Boost Pedal

Looking to use something like the TC Electronic spark in between my Nano Cortex and Tonex Cab. I just need a simple volume boost for leads, and I don’t want to get into midi controllers.

Would a TRS out of the Nano into the Spark, and then another TRS from the Spark into the Tonex work? Alternatively could the Mission Engineering expression pedal be used to toggle an on/off volume boost in the Nano instead?