Change timebase, Working color and Preview File Format

Hi,

Is it possible to change via script this parameters?

Timebase -> to 25fps

Working Space Color -> to 709

Preview File Format -> to I-Frame Only MPEG

I've found this script but it doesn't work on Premiere v15

var seq = app.project.activeSequence;

if (seq){

var settings = seq.getSettings();

if (settings){

var tempFR = settings.videoFrameRate;

tempFR.seconds = 0.04;

settings.videoFrameRate = tempFR;

settings.videoDisplayFormat = 101;

seq.setSettings(settings);

var safetyCheck = seq.getSettings();

}

}

Link where I found the code.

https://community.adobe.com/t5/premiere-pro/change-frame-rate-of-a-sequence/m-p/10289545

Thankyou