IR sensor read for Lego Mindstorms EV3

We are trying to control the Lego Mindstorms EV3 which involves reading the proximity and the beacon values for the IR sensor. I have written a small MATLAB script which is included in Simulink as an embedded matlab function. The code looks like this

function [proximity,heading]= Readsendata myev3=legoev3('usb')

myirsensor=irSensor(myev3)

[proximity,heading] = readBeaconProximity(myirsensor,1)

end

I received an error while running the model in the external mode which shows

Code generation does not support the 'delete' method. Handle objects are only destroyed when program execution ends, and destructors are never called.

Function 'legoev3.m' (#40.15379.15545), line 345, column 9: "function delete(obj)" Launch diagnostic report. Component: MATLAB Function | Category: Coder error

Could you please help me trouble shoot what could be the problem related to the same?

Thanks and Best Regards,

Thomas