[PD-dev] Memory reallocation problem

Hi: I am triying to allocate a n*n matrix of a type defined structure of data. The pd external object example I'm sending attached is very simple: each time it receives any message except the "clear" message it increments a counter and reallocate a matrix of n*n members where n is the number stored in the counter (so, 1, 4, 9, 16 and so on). If it receives the "clear" message, it reset the counter to 1 and reallocate the matrix to 1x1. The fact is that the object crashed when reallocating and I can't be able to know what am I doing wrong. I use the traditional "realloc" function. Any help will be welcome. Best Isi