Array building with a for loop

[Sara2004]

I am using indexing on the right edge of a For Loop to try to build a larger 2-D array out of smaller 2-D arrays but the output of the tunnel insists on being a 3-D array. I will attach my VI. The sub VIs are not important; the comments in the block diagram should explain the situation sufficiently. Thanks!

[Sara2004]

Please disregard this request for help. I solved my problem by using 'insert into array' instead of building array.