Unable to calibrate robot

[Shababa Bakht]

Hello,

I'm using Tapsterbot and trying to use Appium Robots on it. However, I've been unsuccessful. I'm using the most recent tapsterbot code and appium robots code. When I run the command:
appium --udid [udid here] --app RobotCalibration.app --pre-launch

I get an appium command not found error. Appium is installed, but I'm unsure of how to continue.

Thanks.