variable size matrix error in matlab function block

I use variable size 'w1' matrice in feedback loop with matlab function block. I configured the setting by opening up the Embedded MATLAB Editor, then, select Tools>Edit Data/Ports. Select the corresponding input and check "Variable-size" on the right panel. Also, enter [2 25] as the Size (this is used as the maximum size for variable-size signals).

Then exist this error

Expression '[2 25]' for maximum of data 'w1' (#113) must evaluate to a scalar.

How can solve this error ?

Answer 1

[Kaustubha Govind]

You need to enter the maximum size of variable-size signals by checking the "Variable size" box and entering the size in the "Size" field. It looks like you may be using the "Maximum" field instead, which is used to specify the maximum value that the signal can attain.