How can I get a quest internalId value?

[iFedix]

Hey,
so, to update my addon, UndauntedPledgesUtilities, I need to add some info about the new two dungeons included in the new Flames of Ambition DLC. I know that the two new dungeons quests are called Burning Secrets and Into the Deep. What I need is the internalId of the quests to check ingame the result of the GetCompletedQuestInfo(internalId) function (I need to know if the character has completed or not the dungeon quest). What I usually do to find this value is to go here https://esoitem.uesp.net/viewlog.php?record=quest and type the name of the quests and copy the related internalId value.
My question is: how these values are dumped? Is there a way to retrieve these internald values directly in game with an addon/function that I dont know? Thanks for the help!