Having arms up in the air as puppet keeps walking through Keyframes

Hi,

I made a 30 scene where I have a character walking for a few seconds and then he stops. I have it under Position Based. I keyframed where I wanted it to start and end. It worked fine.

I want the puppet to swing his arms for 10 seconds, have them up in the air, have then stay like that but the puppet keeps walking.

I wanted the puppet to swing his arms for for 10 seconds and then have the arms stop swinging. This is what I did:

1) I started my scene from the beginning again and I pressed the Arm Swing Stop watch to add the keyframe. The number was at 0 

2) I moved the playhead to 10 seconds and I changed the number on Arm Swing to another number where the arms are in the air. 

3) This where I want the arms to stop swinging and remain in the air as the rest of the puppet keeps walking untill it stops 20 scconds later. 

4) I right clicked on the 2nd keyframe of the Arm Swing. 

5) I pressed Toggle Hold Keyframe

6) I restarted the scene from the beginning and when it fot to the keyframe where the arms werer in the air, it did not stop. It just kept walking as usual/

What am I doing wrong?