"out of bounds" error with floor/fix rounding in matlab function block in Simulink

Hello,

I wish to use a rounding function (floor or fix) in a matlab function block, in order to generate an array index from a floating point value.

However, I get an "out of bounds" error, pointing to the line with said rounding function.

How can I use one of these functions in a Matlab function block?

[Kaustubha Govind]

Could you please paste a code snippet to show how you're calling the function?