Remotely debugging by Qt creator 2.7.1 can't see "Locals and Expressions" on TI AM335x

I think the root cause may be in the python, although I am still not sure. I can find that the 'bb' command is not recognized by gdbserver on the AM335x EVM, and it is used to get the data in "Locals and Expressions".

The solution for me is to install Qt creator 3.0. After installing it, the "Locals and Expressions" shows data!