The #35 is a link to the line of code in the MATLAB Fcn Block. Furthermore,
I think 'kalman' function is not supported for code gen, which is triggered during compilation of the MATLAB Fcn Block. Supported function list is here:
www.mathworks.com/help/releases/R2014b/coder/ug/functions-supported-for-code-generation--alphabetical-list.html
One way to bypass this limitation is to define the function as 'coder.extrinsic' at the beginning of the file:
coder.extrinsic('kalman')
Another way is to use the 'Kalman Filter' Simulink block directly:
www.mathworks.com/help/releases/R2014b/control/ref/kalmanfilter.html
Thanks, Sandip