Dynamically change Tooltip Text

Needing to dynamically change the tool tip on the fly, I added this to my version, just above the "show" function:
        resetTooltip: function(t) {
            this.title = t;
            if (this.$tipsy) {
                this.$tipsy.remove();
            }
            this.ready = false;
        },

Call it this way:
$('#objId').data('tooltipsy').resetTitle("new tooltip text");
