[TUTORIAL] Custom portrait in cutscene maker

I have seen people do this in mod before  and I know I have to make an fpg file named "portrait" and put them in there. But how do I use them in cutscene maker. Because when I just use a text file to make a cutscene they Ethier do show up or the cutscene is to long so I need cutscene maker but how do I do custom portraits in cutscene maker

To create custom portraits in your mod, follow the next steps:

• In your script folder of your mod, create the fpg named portraits.
  

• Have your portraits ready with 44 x 44 pixel size, preferable saved in PNG format.
  

• Import your images inside the portraits.fpg naming the files from 500 to 799.
  

• Save your fpg.
  
• Open the txt file of the cutscene you want to add your new portraits. In the dialogue page the default number for no portrait will be at 000. Change the number to the one you assigned in your fpg.
  

• Save your txt file.
  
• VOILA~! 
  

so im guessing the

1 is the fpg code
500 is the portrait number

but whats the 180 for?