Changing values in form data

The example process (see Examples of XPath expressions) requires that the purchase amounts be specified in a different currency. You can use the execute operation of the Set Value service to change the values in the form fields.

The process data tree is illustrated in the following diagram.

To perform mathematical operations on form field values, you first must change the field value to a number type. Changing the value of the totalCost field by an exchange rate of 0.82 requires the following expression for the Expression property of the service’s execute operation:

number(/process_data/purchaseForm/object/data/xdp/datasets/data/purchaseOrder/cost/totalCost) *0.82)

// Ethnio survey code removed