I'm not certain as to whether or not your agreement was approved by the court, and filed in the court records, so that it could be enforced by the court, rather than by civil action for breach of contract. If "yes," then you can use the agreement as grounds to enforce the original eviction. If no, then you would have to bring a new eviction action, and use the agreement as the terms and conditions of the new lease, which is in breach for nonpayment.
The difference between the two procedures matters, because in the former you don't need to provide notice to quit, or file and serve a new summons and complaint. You would simply file a motion for a writ of restitution, using the previous case number. In the latter circumstance, it would be an entirely new landlord-tenant action, and you would have to effectively start from scratch.
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