Convert Text Time From A Userform Textbox to A Time Value

I have this line of code in which I am trying to convert a userform textbox (text) timne value to an actual time value.

In my example, me.uf9a_tb_cstart = "7:00 am". This code has a result of 0:00, not the 7:00 expected.

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I also used CLng and had similar results.

Can anyone suggest the proper route I should be taking to resolve this?