On the record before us, we conclude that the trial court did not commit reversible error when it denied the Former Husband's Motion to Vacate. There was no basis upon which to impute income to the mother, see § 61.30, Fla. Stat., and the Department of Revenue established a substantial change in circumstances requiring an increase in the father's child support obligation, see § 61.14, Fla. Stat.

Affirmed.