How to pass symbolic variables to funcion handle

I have some function handle in console defined like this:

g=@(t1,t2,t3)[t1^2,t2^3,t3^3];

Then, I have some function like this:

function [] = somefunction(g)
s = sym('s',[1,nargin(g)])
g(s)

This gives an error, because the vector t is viewed as only one element and therefore the error

Not enough input arguments.

appears. How con I fix this?