Interference with contract is a tort which is proven by the following:
1. A contract between the plaintiff and a third party at the time of the claimed interference.
2. Defendant knew of the contract at that time.
3. Defendant intentionally interfered with the contract.
4. Defendant improperly interfered with the contract.
5. Defendant’s conduct caused the breaching party to breach the contract.
6. Plaintiff was damaged as a result of defendant’s conduct