The figure shows a screenshot of the Expression Builder dialog.

The Expression box contains the following line:

bpws:getVariableData('selectManufacturerResponse','parameters',
'/ns15:processRequestQuoteResponseElement/ns15:return/ns15:supplierPrice') <
bpws:getVariableData('rapidManufacturerResponse','parameters',
'/ns16:POItemsQuoteResponse/ns16:return/ns16:supplierPrice')

The BPEL Variable box contains the following tree hierarchy:

The Content Preview box contains the following line:

bpws:getVariableData('rapidManufacturerResponse','parameters',
'/ns16:POItemsQuoteResponse/ns16:return/ns16:supplierPrice')