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Question: Need to index a vector to the summing variable of a sum.

Question:Need to index a vector to the summing variable of a sum.

mr_picky 20 Maple
sum vector index
April 24 2024
1

To simplify, I will use some of my test code, but I need to use a vector index within a sum. 
m=Vector[column](3, [1, 1, 1]);
sum(L[k], k = 1 .. 3) ;

returns "Error, bad index into Vector" 
is there a way around this problem?
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