use of "instead"

[KLPNO]

Hello everyone
I'd like to ask if I can phrase a sentence with "instead" this way.

He noted another important point: “No NGO struggled for power, performing a very important function of monitoring instead."

NGO stands for non-gevernmental organization.

 

[Anglika]

You can. However, I think you would be better to split the sentence, and rephrase the second part as "They performed a ...."