How to correct set preserve-order value on "false" in testng.xml.html file, TestNG
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I try to solve problem with order in calling test funtions.
In test class they are in order: 

    setUp() (with @BeforeClass)
    afterMethod() (with @AfterClass)
    testGoToKatalog() (with @Test)
    testGoToPromocje() (with @Test)
    testTypeAndSubmit() (with @Test)
    testCheckTar() (with @Test)

and are invoked in order:

    testCheckTar() (with @Test)
    testGoToKatalog() (with @Test)
    testGoToPromocje() (with @Test)
    testTypeAndSubmit() (with @Test)

I'm trying to change testng.xml.html file and set inside value of preserve-order="false". Every time when I changed this parametr and run my test, it is set on "true" automatically. 
Any one know why or know other solution?