Question: Three lines of code: Display the value of function

Hi,

I have a mistake in these lines but I d'ont know the exact error. There is no numeric value of g(1,1)=4???????????????  Thanks for your help.

restart;
vvv:=n^2+3*m;  
g:=(n,m)->vvv;
g(1,1);  No display of the value 4
                               

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