Processing codes used in version 3.0, not working on version 3.3.6

I have a previous code that works with version 3.0, and now it has build errors with 3.3.6. It says, errors have indicated below:

1. ERROR in C:\Users\MM\AppData\Local\Temp\android8956459409649435372sketch\app\src\main\java\processing\test\processing_sw_smart_leds\Processing_Sw_Smart_LEDs.java (at line 156) startActivityForResult(requestBluetooth, 0); ^^^^^^^^^^^^^^^^^^^^^^

The method startActivityForResult(Intent, int) is undefined for the type Processing_Program

1 problem (1 error) Picked up _JAVA_OPTIONS: -Xmx512M

I could not see any error in the codes, but this error appears, and I do not know what is wrong.