Small problem with a TogglePVPFrame script

[Deleted]

Hi I have this script for a kgpanel:

    if pressed then
        TogglePVPFrame()
    end

but when I press the button on a character that is too low level to gain access to the PVP frame I get this lua error:

Message: [string "BR Button_OnClickDown"]:7: attempt to call global 'TogglePVPFrame' (a nil value)
Time: 03/06/13 22:04:52
Count: 1
Stack: [string "BR Button_OnClickDown"]:7: in function <[string "BR Button_OnClickDown"]:1>

Locals: self = kgPanel5 {
 0 = <userdata>
 _backdrop_options = <table> {
 }
 _GetBackdropColor = <function> defined =[C]:-1
 SetBackdropGradientAlpha = <function> defined @Interface\AddOns\kgPanels\Libs\LibBackdrop-1.0\LibBackdrop-1.0.lua:513
 _SetBackdrop = <function> defined =[C]:-1
 GetBackdropBorderSection = <function> defined @Interface\AddOns\kgPanels\Libs\LibBackdrop-1.0\LibBackdrop-1.0.lua:141
 GetBackdropColor = <function> defined =[C]:-1
 _backdrop = <unnamed> {
 }
 _GetBackdropBorderColor = <function> defined =[C]:-1
 SetBackdropBorderColor = <function> defined =[C]:-1
 bg = <unnamed> {
 }
 missing_anchor_at_load = false
 missing_parent_at_load = false
 scripts_loaded = false
 SetBackdropBorderGradientAlpha = <function> defined @Interface\AddOns\kgPanels\Libs\LibBackdrop-1.0\LibBackdrop-1.0.lua:546
 GetBackdropBackground = <function> defined @Interface\AddOns\kgPanels\Libs\LibBackdrop-1.0\LibBackdrop-1.0.lua:134
 text = <unnamed> {
 }
 SetBackdrop = <function> defined =[C]:-1
 BorderTextureFunction = <function> defined @Interface\AddOns\kgPanels\Libs\LibBackdrop-1.0\LibBackdrop-1.0.lua:122
 SetBackdropColor = <function> defined =[C]:-1
 GetBackdropBorderColor = <function> defined =[C]:-1
 _GetBackdrop = <function> defined =[C]:-1
 GetBackdrop = <function> defined =[C]:-1
 SetBackdropBorderGradient = <function> defined @Interface\AddOns\kgPanels\Libs\LibBackdrop-1.0\LibBackdrop-1.0.lua:520
 _SetBackdropBorderColor = <function> defined =[C]:-1
 _SetBackdropColor = <function> defined =[C]:-1
 SetBackdropGradient = <function> defined @Interface\AddOns\kgPanels\Libs\LibBackdrop-1.0\LibBackdrop-1.0.lua:506
}
button = "LeftButton"
kgPanels = <table> {
 SetDefaultModuleLibraries = <function> defined @Interface\AddOns\Masque\Libs\AceAddon-3.0\AceAddon-3.0.lua:383
 FetchFont = <function> defined @Interface\AddOns\kgPanels\kgPanels.lua:382
 SetupScript = <function> defined @Interface\AddOns\kgPanels\kgPanels.lua:1017
 Enable = <function> defined @Interface\AddOns\Masque\Libs\AceAddon-3.0\AceAddon-3.0.lua:315
 RegisterChatCommand = <function> defined @Interface\AddOns\Bagnon\libs\AceConsole-3.0\AceConsole-3.0.lua:85
 EnableModule = <function> defined @Interface\AddOns\Masque\Libs\AceAddon-3.0\AceAddon-3.0.lua:348
 modules = <table> {
 }
 GetModule = <function> defined @Interface\AddOns\Masque\Libs\AceAddon-3.0\AceAddon-3.0.lua:231
 IterateEmbeds = <function> defined @Interface\AddOns\Masque\Libs\AceAddon-3.0\AceAddon-3.0.lua:458
 ResetFont = <function> defined @Interface\AddOns\kgPanels\kgPanels.lua:999
 defaultModuleLibraries = <table> {
 }
 eframe = kgPanels_Dep_Frame {
 }
 UnregisterChatCommand = <function> defined @Interface\AddOns\Bagnon\libs\AceConsole-3.0\AceConsole-3.0.lua:111
 Printf = <function> defined @Interface\AddOns\Bagnon\libs\AceConsole-3.0\AceConsole-3.0.lua:69
 angles = <table> {
 }
 GetName = <function> defined @Interface\AddOns\Masque\Libs\AceAddon-3.0\AceAddon-3.0.lua:300
 AddMissingMedia = <function> defined @Interface\AddOns\kgPanels\kgPanels.lua:467
 ReParent = <function> defined @Interface\AddOns\kgPanels\kgPanels.lua:721
 name = "kgPanels"
 FetchArt = <function> defined @Interface\AddOns\kgPanels\kgPanels.lua:379
 IsEnabled = <function> defined @Interface\AddOns\Masque\Libs\AceAddon-3.0\AceAddon-3.0.lua:467
 orderedModules = <table> {
 }
 CommandLine = <function> defined @Interface\AddOns\kgPanels\kgPanels.lua:616
 DisableModule = <function> defined @Interface\AddOns\Masque\Libs\AceAddon-3.0\AceAddon-3.0.lua:366
 active = "Main"
 RemoveFrame = <function> defined @Interface\AddOns\kgPanels\kgPanels.lua:736
 parents = <table> {
 }
 GetArgs = <function> defined @Interface\AddOns\Bagnon\libs\AceConsole-3.0\AceConsole-3.0.lua:144
 Print = <function> defined @Interface\AddOns\Bagnon\lib

It use to be fine when I first started using it but now its an issue so I was wondering if I was either using the wrong toggle frame code or if there is something I could add to make sure I do not get this error but still can use the button for characters who can use it.

Thank you!

[Crudor]

if pressed then
if not IsAddOnLoaded("Blizzard_PVPUI") then
LoadAddOn("Blizzard_PVPUI")
end
PVPUIFrame_ToggleFrame()
end

[Deleted]

Thank you so much, that worked perfectly