simulation problem

hello everybody, I'm trying to correlate 2D signals and find the maximum value of the correlation ,I used xcorr block to correlate signals and minmax block to find maximum but the output not as I want ,it seem that xcorr make multiplication for the signals (point by point) and the minmax block give the value at the sample time.I think cause of the problem is the setting of the blocks. if the problem is not clear I will send figure for who think he can help me ,which show the model and the output of each step. Any help in this regards would be appreciated