Reset a single field in repeated Subform...I cannot seem to reference it....

You need to specify the instance's index of the repeating subform to target. 

so if the action is triggered by an event linked to a cell in the same row as the field to be reset,you could do something like this:

// determine the index of the targeted instance of the repeating form

var TargetIndex = this.parent.parent.parent.index; 

// create the string representing the SOM of the targeted field

var TargetCell = "form1.Main.sfOMKT["+TargetIndex+"].Table1.Row3.sfFigs.numFigures";

// reset the value of the targeted cell

xfa.host.resetData(TargetCell);

Hi,

you can use the resolveNodes() method, to reference multiple instances in an object.

Here's an example. You're creating a node list for all instances of sf0MKT named oSubforms. 

Then you're using a for loop to process every node in the list.

var oSubfoms = form1.Main.resolveNodes("sfOMKT[*]),
    i = 0;

for (i; i < oSubfoms.length; i += 1) {
    var oNode = oSubform.item(i);
    oNode.Table1.Row3.sfFigs.numFigures.rawValue = null;
}