iOS cannot find element by xpath

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Hi all,I am new to Katalon
I have tried get size child elements(XCUIElementTypeCell) of XCUIElementTypeCollectionView follow this

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Xpath it should be :

//XCUIElementTypeApplication/XCUIElementTypeWindow[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeCollectionView[1]

And then i write script below :

AppiumDriver<?> driver = MobileDriverFactory.getDriver()]
ArrayList ls = driver.findElementsByXPath("//XCUIElementTypeApplication/XCUIElementTypeWindow[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeOther[1]/XCUIElementTypeCollectionView[1]/*")
println('Element found : ' + ls.size())

When i run katalon.It not found that elements

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332088×948 273 KB

tools:
appium 1.14.0
xcode 10.2.1
katalon 6.2.1
iOS 12.3.1

Does anyone know what wrong with xpath?
Because I want to get the size for verifying text last element of XCUIElementTypeCell

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