@Carl Love 

thank you very much for all your help and explanations.

hello,

thank you for your explanation.

i am just wondering what does this notatiom mean? -> 

thank you 

hello,

thank you for your respond.

here is my code and i need to only use looping to find the largest number i cant use "with functions"

R:=rand(1..50)

seq(R(1..50),i=1..20)

L:=[%]

max:=proc(L,maxv : : evaln)

locali;

maxv:=L[i];

for i from 1 to nops(L) do

if eval(maxv)<L[i] then maxv:=L[i]end if;
end do;

end proc;

can you please look at my code and tell me where i am wrogn?

Thank you very much.

@Kitonum