B1 := plots:-animate(plots:-pointplot, [[seq(X(kk, j), j = 1 .. 10)], [seq(Y(kk, j), j = 1 .. 10)]], kk = [seq(1 .. 50)], symbolsize = 25, symbol = solidcircle, colorscheme = ["valuesplit"])

gives error

Error, unsupported type of index, kk

Here X and Y are 50*10 matrices
 

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