conversion from double to integers

[Aeroing]

I have built a GUI, where I take numerical values from a text box to calculata something afterwards. For this I used this command: x = str2double(get(handles.edit1,'String'))
When I give these numbers as parameters to a function [a,b]=myfunction(x) this warning appears:
Warning: Subscript indices must be integer values.

What do I have to do? With which command can I transform these noumbers into the correct format for myfunction. I have already tried int32 and replaced
x = str2double(get(handles.edit1,'String'))
by
x = str2num(get(handles.edit1,'String'))
but the warning is still there. I will be grateful for every help.
Bye
Aeroing

 

[JockeK]

Maybe this will help

x = int32(str2num(get(handles.edit1,'String')))

These conversion functions are also available: int8, int16 and int64.