Im working on Arduino Uno board recently im stuck with my code, i couldnt debug using print() in ArduinoIde.So i downloaded AtmelStudio 6.2 for debug purpose. 
when i set the breakpoint and try to build .Im getting the warning
**The breakpoint will not currently be hit. Unable to set requested breakpoint on target.The current selected deviceis unable to set breakpoints during runtime**

please help me sort this issue