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7	7	* **${ixf:sum(xpathExp1, xpathExp2)}** calculates the sum of the results obtained from evaluating "xpathExp1" and "xpathExp2".
8	8	* **${ixf:sum(xpathExp,"10")}** the result will be the sum of the result obtained from evaluating "xpathExp" and 10.
9		-* **${ixf:sum("10","12","100")}**  the result will be 122, which is the sum of the individual results of 10, 12, and 100.
	9	+* **${ixf:sum("10","12","100")}**  the result will be 122, which is the sum of the individual results of "10", "12", and "100".
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11	11	Ensure that numerical values are between double quotes : ${ixf:sum("10","12","100")},
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16	16	== Example : ==
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18		-* **${ixf:sum(Documents/Order/DeliveryAddress/OrderLine/Price,"10"}**
	18	+* ${ixf:sum(Documents/Order/DeliveryAddress/OrderLine/Price,"10"}
19	19
20		-Let's suppose that the result of //Documents/Order/DeliveryAddress/OrderLine/Price// is 30, so the sum is 40.
21		-
22	22	== Note: ==
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24	24	Numerical values can be also enclosed within single quotes : ${ixf:sum('10','12','100')} **OR **mix single and double quotes, like this: ${ixf:sum("10",'12','100')}.