How to modify a variable with a gui?

Hi, I'd like to create a matlab gui, in which through a button,I can change the value of a variable defined in the workspace. The problem is that i don't know how to pass the variable to the callback function, linked with the button.Thank you

Answer 1

[Ramnarayan Krishnamurthy]

In the callback function for the button, use the assignin function to modify the value in the base workspace.

For ex.

modified_value = 100;
assignin('base','var', modified_value);

where ' var' is the variable to be modified (assuming you know which variable in the base workspace has to be modified)