IK Path could not complete the execution

Hi,

Now I have created two paths A and B using IK Path, when I repeat the signal quantity given to start for each path individually the paths can be executed correctly, but once I execute A and B alternately the paths are unreachable.

For example, I am using Signal Start to get path A to start moving, and Signal Ended to get if path A has finished executing. When Signal Ended is true for A, I start executing path B. It happens that path B can't finish execution and Signal Ended stays false.

This results in me not being able to control the robotic arm by itself to do the job I want to do, how can I solve this problem?