Set to move in a two-dimensional plane

[ChenyangRan]

Hi, I'm using the panda-gym to create my UR3 Reach. But when I set the initial pos, and set_action(np.array(0,0,0)), the ur3 switch its pos automatically. It seems to automatically align tcp with xyz in the environment. Could you please tell me how to fixed the initial pos and just move in 2D?

Before:

set action is [0,0,0]