Can't get iOS picker wheel options use appium inspector

I use appium-desktop 1.12.1
robotframework 3.1.2
robotfrmework-ride 1.7.1
iPhone 5s 12.3.1(but set capabilities to 12.1, cause my Xcode is old)

there are two options in the selections , truck and trailer, i want to get all options, but only can locate the current select option, is there any way to do this?

in the screenshot, can only locate to the node picker wheel, it’s value is the selected truck, can’t locate it’s child node

i use ride:
${count} | get matching path count | //XCUIElementTypePicker/XCUIElementTypePickerWheel/*
out put is 0