how add picker hour custom [1,2,3,4] only

[masrnet2006]

Describe the bug A clear and concise description of what the bug is.

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Library and Device details (please complete the following information):

• Library version: [e.g. 2.1.0]
• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]

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[Kurt57]

yes would be interesting me also