# Debug Rotation Matrix # ![](https://i.imgur.com/Yu4nq8K.png) ==>> So, if we only use X,Y,Z values, how about Rx, Ry, Rz? Are they zero values or we can set it with fix values by ourself? - In the code flow for retrieving process, ShiftGripperPose returns the moving poses (Figure 1), but in ShiftGripperPose function, it non-returns Rx, Ry, Rz. For that reason, the moving poses have zero values Figure 1. ![](https://i.imgur.com/OBlmghs.png) Figure 2. ![](https://i.imgur.com/yjixI9v.png) With zero values, it cannot grasp objects.