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	1	+{{toc/}}
	2	+
1	1	= Introduction =
2	2
3		- Variable is a container that holds a value and can be called in the iXPath Scenario. The importance of variables is to make flexibility in using some values without referring to their origins.
	5	+ Variable is a container that holds a value and can be called in the iXPath Scenario. The importance of
4	4
	7	+variables is to make flexibility in using some values without referring to their origins.
	8	+
5	5	There are 2 types of  variables:
6	6
7	7	* System variables
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9	9
10	10	To call a variable, we should put it inside ${}. Eg: for a variable named ‘iXVar’, it can be called as ${iXVar}.
11	11
12		-== System variables ==
	16	+== System variables ==
13	13
14	14	System variables define some default values in the system, and they can be called by users several times.
15	15
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29	29	1*. (((
30	30	(% style="width:884px" %)
31	31	|(% style="width:150px" %)**Function**|(% style="width:365px" %)**Description**|(% style="width:367px" %)**Use**
32		-|(% style="width:150px" %)Get(i) |(% style="width:365px" %)Get a file with index number "i" from the BpmnFile list, the indexes begin from 0 as the first element, and so on.|(% style="width:367px" %)(((
	36	+|(% style="width:150px" %)Get( x ) |(% style="width:365px" %)Get a file with index number "x" from the BpmnFile list, the indexes begin from 0 as the first element, and so on.|(% style="width:367px" %)(((
33	33	if we have an XmlToXml connector named "XmlToXml1" we can get __the second__ BpmnFile as :
34	34
35	35	${XmlToXml1.get(1)}
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53	53
54	54	${XmlToXml1.get(1).type()}
55	55	)))
56		-
57		-
58	58	)))
59	59
	62	+== Local variables ==
60	60
	64	+Local variable is a type of variable that can be newly created and used for a certain need.
61	61
	66	+So as to create a local variable "newVar" with a value equals to "var number 1", we should write this piece of XSL code :
62	62
	68	+{{code language="XML"}}
	69	+<xsl:value-of select=" ixf:SetVar('newVar', 'var Number 1')"></xsl:value-of>
63	63
	71	+{{/code}}
	72	+
	73	+The call of this new variable in the scenario is similar to previous system variables:  **${newVar}.**
	74	+
	75	+To get 'newVar' inside an XSL file :
	76	+
	77	+{{code language="XML"}}
	78	+<xsl:value-of select="ixf:getVar('newVar')"></xsl:value-of>
	79	+{{/code}}
	80	+
	81	+= Examples =
	82	+
	83	+We set a simple example of a scenario to illustrate how to use variables.
	84	+
	85	+We want to receive a file by a FileListener and send it by mail that contains a message body.
	86	+
	87	+here is the scenario:
	88	+
	89	+ [[image:2021-04-27_21h31_55.png||height="140" width="446"]]
	90	+
	91	+The configuration of the "SendMail" is :
	92	+
	93	+ [[image:2021-04-27_21h32_07.png||height="373" width="281"]]
	94	+
	95	+As shown in the mail body, we called 3 variables which are :
	96	+
	97	+* Env : the current environment
	98	+* iXSession : ID session
	99	+* path : path of the BpmnFile in FileListener1.
	100	+
	101	+= String Class =
	102	+
	103	+String class is java object class that
	104	+
	105	+
	106	+
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