tournament_contest_wager_info_effect

tournament_contest_wager_info_effect = {
	if = {
		limit = {
			exists = var:tournament_wager_target
			exists = var:tournament_wager_payout
		}
		var:tournament_wager_target = { save_scope_as = wager_target }
		if = {
			limit = {
				scope:activity = { activity_tournament_versus_contest_trigger = yes }
			}
			switch = {
				trigger = var:tournament_wager_target
				scope:contest_loser = { custom_tooltip = wager_lost_tooltip }
				scope:contest_winner = { custom_tooltip = wager_valid_tooltip }
			}
		}
		else = {
			if = {
				limit = {
					var:tournament_wager_target = { exists = var:contest_aptitude }
				}
				if = {
					limit = {
						scope:activity = { has_current_phase = tournament_phase_horse_race }
					}
					custom_tooltip = wager_valid_horse_tooltip
				}
				else = { custom_tooltip = wager_valid_tooltip }
			}
			else = {
				if = {
					limit = {
						scope:activity = { has_current_phase = tournament_phase_horse_race }
					}
					custom_tooltip = wager_lost_horse_tooltip
				}
				else = { custom_tooltip = wager_lost_tooltip }
			}
		}
	}
}

As written in game/common/scripted_effects/04_dlc_ep2_tournament_effects.txt.