Android Question View does not execute comands

[Bob Spielen]

I have a B4XComboBox on a TabStrip Page. When ComboBox Last Item is clicked it should that the combobox hides and a B4XFloatText shows up ....
Strange that with the exactly same code the process works fine in other part of the App.... Tried .mbase, .Textfield ...all kinds of combinations....
What am I not considering/doing wrong...
Thanksfull for orientations ....

Sub B4XComboBox3_SelectedIndexChanged (Index As Int)

    If Index = B4XComboBox3.Size-1 Then 'Input new product item....
      
        B4XComboBox3.cmbBox.Visible  =   False
      
        B4XFloatTextField3.mbase.Visible = True
        B4XFloatTextField3.mbase.Color = 0xFFFFF564
        B4XFloatTextField3.TextField.Color = 0xFFFFF564

 

[Bob Spielen]

I went back to normal Edittext as B4Xview and solved the problem. May say that B4XFloatTextField is a little tricky to handle during runtime....