我是个新手，能不能帮我解答下？

Private Sub Command1_Click()
lbl12.Caption = "是"
lbl12.Alignment = 2
txt11.Text = Time
lbl11.BackColor = &H80FF80
lbl12.BackColor = &H80FF80
lbl13.BackColor = &H80FF80
txt11.BackColor = &H80FF80
txt12.BackColor = &H80FF80
txt13.BackColor = &H80FF80
txt14.BackColor = &H80FF80
txt15.BackColor = &H80FF60
End Sub
这段代码执行到TXT13没问题，为什么到了txt14和txt15就出现编译错误？为什么？