Question: how can I get the index x and y from my matrix A with value b?

I use: min_v, max_v := rtable_scanblock (cc_matrix, [rtable_dims (cc_matrix)], 'Minimum', 'Maximum'); min_v, max_v := 0., 0.995879045499999948 and get a min and max value. My Question is how can I get the index of my max value from my Matrix cc_matrix?
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