public void setSize(String nCol, String nLin, Context c) {
		this.nColID = nCol;
		this.nLinID = nLin;
		int col = c.getInt(nCol);
		int lin = c.getInt(nLin);
		matrixRepresentation = new String[lin][col];
		for (int i = 0; i < lin; i++) {
			for (int j = 0; j < col; j++) {
				matrixRepresentation[i][j] = IVPValue.NULL;
			}
		}
	}