Well, I have no idea, I am waiting for Bohémond
But looking at the code, what about this?
ChgFacRelationships = DEN;-50
According to the wiki, the proper syntax in the example available is:
ChgFacRelationships = GBR|-50; FRA|100
Also the last part, the effects on the danish navy.
SelectFaction = DEN
ChangeUnitPool = $uni_DEN_First_Rank_Sqd_1805;-4
ChangeUnitPool = $uni_DEN_Second_Rank_Sqd_1805;-3
ChangeUnitPool = $uni_DEN_Third_Rank_Sqd_1805;-9
Should it not also be within the Actions of the event?