Anon function keeps giving error

I am trying to code an anon function, my code reads

My_Function =@(t,y)(AtheroEqn2016(t,y,e))
[t,y] = ode23t(@My_Function, tp, ic, options);
save('savedData');
clf;

Byt keep getting this error

Error: File: AP.m Line: 39 Column: 17 "My_Function" was previously used as a variable, conflicting with its use here as the name of a function or command.

Can anyone tell me where I am going wrong

Thanks

Answer 1

[Guillaume]

My_Function is already a variable of type function handle, you do not need and must not convert it into a function handle. Thus:

[t,y] = ode23t(My_Function, timePeriod, initialConditions, options);