Hi Sergey,

Ok

PUBLIC oform1

oform1=NEWOBJECT("form1")
oform1.Show

DEFINE CLASS form1 AS form

	Caption = "Form1"
	Name = "Form1"

	ADD OBJECT label1 AS label WITH ;
		Caption = (TTOC(DATETIME())), ;
		Left = 42, ;
		Top = 43, ;
		AutoSize = .T., ;
		Name = "Label1"


	ADD OBJECT command1 AS commandbutton WITH ;
		Top = 42, ;
		Left = 249, ;
		AutoSize = .T., ;
		Caption = "Refresh Label", ;
		Name = "Command1"


	PROCEDURE command1.Click
		ThisForm.Label1.refresh()
	ENDPROC

ENDDEFINE

For me Update Caption it means evaluate Caption expression and refresh label text.

If No, Update ??? what means?