That seems more the realm of custom GetDataCell functions, to be honest. Or a Custom Calculate targeting an unconsolidated UD8.
A Dynamic Calc is meant to represent an intersection. It's the user asking "oi, what is the value of A#X:U1#Y...?" and the system going "i'll run a formula and tell you". If you just want to run some arbitrary function with parameters and all, that's a different kind of job.
