Can spousal support be increased due to the obligators increase in salary?

If the court has retained jurisdiction over spousal support, including the amount payable, then, unless any increase is prohibited by the terms of the agreement, otherwise, the amount can be increased due to an increase in salary if the court finds the amount signifcant enough to justify an increase.  However, the court will also look to see if the obligee's income has increased too and the court may look to see whether this increase was anticipated at the time of the original award and thus, factored into the original award.