Ayuda sobre operaciones de los datos de casillas de formularios en Visual Fox Pro

Bueno lo que pasa es que ya no usas variables, utilizas objetos.
Aqui te envio un pequeño ejemplo que espero te ayude.
PUBLIC oform1
oform1=NEWOBJECT("form1")
oform1.Show
RETURN
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*-- Form: form1 (h:\fuentes\prueba\prueba.scx)
*-- ParentClass: form
*-- BaseClass: form
*-- Marca de hora: 03/29/03 08:54:00 PM
*
DEFINE CLASS form1 AS form
DoCreate = .T.
Caption = "Form1"
Name = "Form1"
ADD OBJECT text1 AS textbox WITH ;
Alignment = 3, ;
Value = 0.00, ;
Height = 23, ;
Left = 144, ;
Top = 60, ;
Width = 100, ;
Name = "Text1"
ADD OBJECT text2 AS textbox WITH ;
Alignment = 3, ;
Value = 0.00, ;
Height = 23, ;
Left = 144, ;
Top = 96, ;
Width = 100, ;
Name = "Text2"
ADD OBJECT text3 AS textbox WITH ;
Alignment = 3, ;
Value = 0.00, ;
Enabled = .F., ;
Height = 23, ;
Left = 144, ;
Top = 132, ;
Width = 100, ;
Name = "Text3"
ADD OBJECT label1 AS label WITH ;
Caption = "Valor 1", ;
Height = 17, ;
Left = 96, ;
Top = 60, ;
Width = 40, ;
Name = "Label1"
ADD OBJECT label2 AS label WITH ;
Caption = "Valor 2", ;
Height = 17, ;
Left = 96, ;
Top = 96, ;
Width = 40, ;
Name = "Label2"
ADD OBJECT label3 AS label WITH ;
Caption = "Suma:", ;
Height = 17, ;
Left = 96, ;
Top = 135, ;
Width = 40, ;
Name = "Label3"
ADD OBJECT command1 AS commandbutton WITH ;
Top = 168, ;
Left = 108, ;
Height = 27, ;
Width = 176, ;
Caption = "Efectuar operación de suma:", ;
Name = "Command1"
PROCEDURE command1.Click
Thisform.text3.value=Thisform.text1.value+Thisform.text2.value
ENDPROC
ENDDEFINE
*
*-- EndDefine: form1
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