Xpath for sibling XCUIElement appium 1.6.6 betta

I have following XML on ios:
[XCUIElementTypeCell]
[XCUIElementTypeStaticText :: 20bbbbbb]
[XCUIElementTypeStaticText :: 0]
[XCUIElementTypeStaticText :: aaa]
[XCUIElementTypeStaticText :: 1.03.2018]
[XCUIElementTypeStaticText :: -]
[XCUIElementTypeStaticText :: +]
[XCUIElementTypeButton]

how can I get bold element by XCUIElementTypeStaticText with value 20bbbbb