An insurance company told the Illinois Supreme Court on Thursday that a $7 million payout request should be denied because stacking of liability limits isn’t allowed under state law.

Lawyers for a high school basketball team and its coach involved in a fatal accident argued the language of the policy, issued by Owners Insurance Co., was ambiguous and thus allows for the insured to stack, or aggregate, the liability limit contained in a single policy.

The policy lists $1 million in liability limits seven different times covering seven different vehicles, and the lawyer for Mark Kuhn, the basketball team’s driver, …