Call with arduino according to X value by mobile

[PabloM.R]

I have connected the Arduino via bluetooth to an Android mobile phone, with an application that receives the data generated by the Arduino, to be more exact it is an accelerometer, I have everything connected and working. The data that the Arduino generates, I visualize in the mobile application, but now comes what I can not do:

I want that when in the mobile application, a number greater than 50 arrives, it automatically calls a phone number.

I do not know if it can be configured from the Arduino code, or if it has to be from the application code, which by the way is made from MIT Inventor 2 from Google.