How to apply portamento to get the desired result?

[huehuehue]

Hi,

first post, yay.

The reference song is "Rich Chigga - Dat $tick" (sorry, cannot post links yet)
youtube.com/watch?v=rzc3_b_KnHc



So, I have the keys and the effect. The producer said in an interview he added an Portamento effect to that to achieve the result he has.
I am quite close, but the important last bit is missing. What would you do?

This is what I got.

View attachment RichChiggaPorta.mp3

Any help appreciated.
Thanks!