Eliminating zero&negative roots in Embedded Matlab Function

Hello,

I have used an embedded matlab function in simulink to Eliminate zero&negative roots in the input vector(u). Following is the code that I have written in this block:

function y = clipo(u) u(u <= 0) = []; coder.varsize('y',4); y=u;

and without coder.varsize('y',4);

But the error Dimension 2 is fixed on the left-hand side but varies on the right ([1 x 4] ~= [1 x :?]).

has shown

Thanks ahead....