Will pass a value into an attribute within XMLdata.
XML is an object such as that returned from SppXmlLoad or SppXmlFromString.
Path is a full path to the element, that contains the attribute, inside the xml object (For example, Quote\Customer).
Attribute Name is the name of the attribute.
Value is new the value of the attribute.
|SppXmlSetAttributeValue(DWVariableXMLFromString,"Bom\Items\Item","Qty",12)||Will set value of the attribute Bom\Items\Item\Qty to be 12.|