Sure is..........
local MyNum = wx.wxGetNumberFromUser("Message", "Prompt", "Caption", 50, 0, 100) --Default, min, max
Or you can get it as a string and then convert it to a number. Can do some checks with either, flip numbers, etc. Goods and bads using both methods. Just have to figure out what works best for you and your condition.
local MyText = wx.wxGetTextFromUser("Message", "Caption", "Default Value")