# How do you multiply one single constant value with a 1D array/matrix containing 25 values in Simulink?

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Hi

I am using a constant block which contains an array of 25 elements in the form [0,1,2,3,......]. I also have another signal that contains a single value e.g. 5. I would like to multiply 5 with each of the elements in that array represented by a constant.

When I try to use the simulink product block I get an error saying "Error in port widths or dimensions. Invalid dimension has been specified for input port 1 of 'Combined/Product1'."

How do I get over this error?

Thanks

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### Accepted Answer

Mischa Kim
on 1 Apr 2014

Edited: Mischa Kim
on 1 Apr 2014

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