Mathematical operations with a vector and a signal

How would be possible to multiply of a signal (discrete) and a 150x1 double vector on Simulink. I am using the function block to make the multiplication, however I receive a signal with a contant value as the result, even though the input signal value is varying in time. That is the first worry that the output result is nothing like the initial signal. The second question is how it would be possible to fit vector values together with the another signal?

[Walter Roberson]

What size is the discrete signal?

I have to wonder if the discrete signal you mention is intended to act as a digital filter? If so then see filter() and filtfilt()

Or is the discrete signal a convolution ?