Can i use the gain block just like a function block?

I want to implement a code (u(1)./K)*tau.^(u(2)) in gain block? Is it possible? I do not want to use fcn block because it generates nx1 matrix because of sampling. I just want to use a single variable to be used in workspace? Is it possible with gain block?

[Walter Roberson]

I am not sure of the relationship between this question and your earlier http://www.mathworks.co.uk/matlabcentral/answers/109186-how-can-i-use-the-output-of-a-function-block-just-as-a-gain ?

Answer 1

[Azzi Abdelmalek]

You can't use a gain block as a function block, and what is the problem with generating an output for each sample, just pick the last one