How to print in two colours on Ultimaker 2

[3D_Designer321 0]

Hi,

 

I recently tried pausing and changing the filament for the last few layers for a two colour effect.

I looked at the Cura website which told me to use Extensions ->Post processing -> Modify G code, then add a pause and filament change.

But despite doing that, it just carries on and finished the job and doesn't stop at all.

 

Am I doing something wrong, or do I just need to wait and pause the print manually then change the material?  It's a bit of a pain for very long jobs when I want to change near the end!

I was printing from Thingiverse a Cat earphones holder if you want to see what I needed to do the dual print:

 

https://www.thingiverse.com/thing:1757076