What value for R20?

I’m building a Shruthi 1 from a kit, but I was planning on using an alternate LCD display I have to hand (this one, to be specific: http://www.mouser.com/ds/2/291/NHD-0216K1Z-FSA-GBW-L-29161.pdf). Could someone advise what the value of R20 needs to be? Many thanks!

No resistor needed. Just a bridge.

Lovely! Thanks for that.