>I want to have a portion of a form that changes depending on a condition whenever refreshed. Can I create different containers as classes and then call the one I want to display somehow during runtime? I'm trying to avoid having multiple containers that will occupy the same space on my form in development. Thanks!

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To add on Stephen's suggestion. This is what I do in some cases. I create a "page" (container object) per condition I need, and then on the main form have the page frame (no tabs and border) with the number of pages as I have conditions. Then when a condition comes up (like in my case a selection from a treeview) I call following code:

LPARAMETERS pnPage

local laPage(10), lcPage, loPage
*!* Which container from my class library depending on which page
laPage(1) = "if_about"
laPage(2) = "if_folder"
laPage(3) = "if_er"
laPage(4) = "if_eex"
laPage(5) = "if_sch"
laPage(6) = "if_inq"
laPage(7) = "if_enr"
laPage(8) = "if_cust"
laPage(9) = "if_settings"
laPage(10)= "if_log"

lcPage = "thisform.pIflex.page"+allt(str(pnPage))
loPage = &lcPage
lcPage = lcPage + ".oPage"

if type(lcPage) = "U" then
    *!* Container doesn't exists, add it
	loPage.addobject("oPage", laPage(pnPage))
	loPage.oPage.left = 0
	loPage.oPage.top = 0
	loPage.oPage.visible = .T.
	loPage.oPage.refresh()
endif
thisform.pIflex.activepage = pnPage

HTH,