I am new to the **SpringSource Tool Suite (STS)** and am having trouble getting functions like `perform tests` or `perform package` to work. 

I usually get an error that states: 

> 
> CreateProcess error=2, The system cannot find the file specified.
> 
> 
> 

I figured out it has something to do with Maven and adding it to the Path, but I cannot seem to find where to implement the environment variable for `MAVEN_HOME` successfully. Everywhere I have looked tells me something different and hasn't worked so far.