Problems with toString

[TheEvilDirect]

Hey im getting a error everytime im using toString.
Error:
[ERROR] addons/Adda/lua/weapons/worldgun/shared.lua:124: attempt to call global 'toString' (a nil value)
1. OnValueChanged - addons/Adda/lua/weapons/worldgun/shared.lua:124
2. ValueChanged - lua/vgui/dnumslider.lua:199
3. OnValueChanged - lua/vgui/dnumslider.lua:41
4. SetValue - lua/vgui/dnumberscratch.lua:47
5. SetValue - lua/vgui/dnumslider.lua:125
6. TranslateValues - lua/vgui/dnumslider.lua:218
7. OnCursorMoved - lua/vgui/dslider.lua:120
8. unknown - lua/vgui/dslider.lua:45

SValue = DermaNumSlider:GetValue()

Seconds = SValue / 25
Minutes = Seconds * 60
Time = math.Round( Minutes )
TimeS = toString(Time)
			
PrepareTime:SetText("Prepare Time: "..TimeS.."min "..Seconds.."sec")

Hint: PrepareTime is a derma label

[r0uge]

it's tostring, not toString. Case matters.

[MysteryPancake]

With what r0uge said-

SValue = DermaNumSlider:GetValue()

Seconds = SValue / 25
Minutes = Seconds * 60
Time = math.Round( Minutes )
TimeS = tostring(Time)
			
PrepareTime:SetText("Prepare Time: "..TimeS.."min "..Seconds.."sec")

Also, make sure Seconds, Minutes, Time and TimeS are LOCAL to the script, they sound like common names and could be messed with by another addon.