inputdlg saves input as a cell and not an array

Hello everyone.

I have a problem with 'inputdlg'.

I want to enter a (for example) 2*3 numerical array, when the input dialog box appears(for example my input will be [1 2 3;4 5 6]).

The problem is, this input is saved as a 1*1 cell and there is no way I can convert it to an ordinary array with numerical values.

I have already tried 'cell2mat' and 'str2double' (but maybe not using them in the right way).

By the way I am using Matlab 2016a.

Thanks for any suggestions.