Question: How do I assign values in 1st matrix column to 2nd column

What I have done is stores algsubs names and expressions in a dual column matrix for later use. Now I need to assign them to each other. matrix is called store

column 1     column2

    a1             4.28x+2.3

    CX3          6.5x^2 +3x

    S1               a1*CX3+3.1x-x^3

Have tried store[1,1]:=store[1,2] but that wipes out the first column.

assign(store[1,1],store[1,2]   didin't work.

There are goint to be up to about 70 of these pairs. Would appreciate any tips on efficiency here too.


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