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...	...	@@ -13,7 +13,7 @@
13	13
14	14	To call a variable, we should put it inside ${}. Eg: for a variable named ‘iXVar’, it can be called as ${iXVar}.
15	15
16		-== System variables ==
	16	+== System variables ==
17	17
18	18	System variables define some default values in the system, and they can be called by users several times.
19	19
...	...	@@ -33,7 +33,7 @@
33	33	1*. (((
34	34	(% style="width:884px" %)
35	35	|(% style="width:150px" %)**Function**|(% style="width:365px" %)**Description**|(% style="width:367px" %)**Use**
36		-|(% 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" %)(((
37	37	if we have an XmlToXml connector named "XmlToXml1" we can get __the second__ BpmnFile as :
38	38
39	39	${XmlToXml1.get(1)}
...	...	@@ -59,9 +59,8 @@
59	59	)))
60	60	)))
61	61
	62	+== Local variables ==
62	62
63		-== Local variables ==
64		-
65	65	Local variable is a type of variable that can be newly created and used for a certain need.
66	66
67	67	So as to create a local variable "newVar" with a value equals to "var number 1", we should write this piece of XSL code :
...	...	@@ -71,17 +71,43 @@
71	71
72	72	{{/code}}
73	73
74		-The call of this new variable in the scnario is similar to previous system variables:  **${newVar}.**
	73	+The call of this new variable in the scenario is similar to previous system variables:  **${newVar}.**
75	75
76		-To get 'newVar' from XSL file :
	75	+To get 'newVar' inside an XSL file :
77	77
78	78	{{code language="XML"}}
79		-<xsl:value-of select="ixf:getVar('Var')"></xsl:value-of>
	78	+<xsl:value-of select="ixf:getVar('newVar')"></xsl:value-of>
80	80	{{/code}}
81	81
	81	+= Examples =
82	82
	83	+We set a simple example of a scenario to illustrate how to use variables.
83	83
	85	+We want to receive a file by a FileListener and send it by mail that contains a message body.
84	84
	87	+here is the scenario:
85	85
	89	+ [[image:2021-04-27_21h31_55.png||height="140" width="446"]]
86	86
	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 : the path of BpmnFile in FileListener1.
	100	+
	101	+= String Class =
	102	+
	103	+in java language, The String class represents character strings. It contains a lot of functions to handle String object.
	104	+
	105	+you can discover all these functions on the following URL :
	106	+
	107	+__[[https:~~/~~/docs.oracle.com/javase/8/docs/api/java/lang/String.html#method.summary>>https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#method.summary]] __
	108	+
	109	+Eg: to check if a variable "myVar" is empty or not, we refer to the isEmpty() method as ${myVar.isEmpty()}, if so then it returns true, if not it will return false.
	110	+
	111	+
87	87

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