Could anyone tell me what I need to specify in LabelSpecification section of UPS xml request document in order to print EPL shipping label? The following is what I have:\[code\] <LabelSpecification> <LabelPrintMethod> <Code>EPL</Code> </LabelPrintMethod> <HTTPUserAgent>Mozilla/5.0</HTTPUserAgent> <LabelImageFormat> <Code>GIF</Code> </LabelImageFormat> </LabelSpecification>\[/code\]But I keep getting the following error in the response:\[code\]Missing/Invalid Combination of LabelSpecification/LabelStockSize\[/code\]I've tried using 'EPL2' as well with no avail. And I've no idea where to specify LabelStockSize. UPS website isn't very helpful in this regard. Thanks in advance.