How to show a RLI field value into Opportunities list view?

Question

Hello Devs! 
 
 I have spend hours and hours searching for the answer to this question: 
 How am I able to show a Revenue Line Items field value into the Opportunities list view? 
 Want I want to do is show the total value of an Opportunity (saved in one field of Revenue Line Items) into the list view to make it visible easier when managing the Opportunities. 
 I hope that I made myself clear. 
 Thanks in advance!

Ángel Ruiz · Accepted Answer

Hi Ángel Ruiz 
 Well, you can create the field into module Opp and use this formula for sum all values the field present into RLIs 
 Insert into definition from field into the field formula an expression that looks like this example: 
 rollupSum($revenuelineitems, "name_your_field_c") 
 I hope help you Nice day

Ángel Ruiz · Answer

Hi &Aacute;ngel, 
 I think I did exactly what your after.... just need to jog my memory on how! I did a volume summary and the RLI's Total , actually intended for Tile View but also show on list view too. 
 Screenshot below from our Opportunity list view: 
 
 And in the record itself: (the top one from list view above) 
 
 And that field (RLI's Total) in studio: 
 Formula: rollupSum($revenuelineitems,"total_rli_amount_c") 
 (Like Sanchez's solution) 
 
 Hope that helps too :-) Luke.

Ángel Ruiz · Answer

Hello &Aacute;ngel, I think the point is that each record must be saved for the formula to do the job.