what this mean( this is in german)

The class handle has no Constant property or Static method named 'edit1'.

Error in CB_Amplitude (line 1) Aneu=str2double(get(handle.edit1,'string'));

Error while evaluating UIControl Callback

Answer 1

[Jan]

I do not see any German text here?

Due to the missing context of the code, I have tu guess: You want "handles" instead of "handle":

Aneu = str2double(get(handles.edit1, 'string'));