Solved Format error when sending a message (lacking args for formatting)

I have an error when i put {0} for exemple in server.Broadcast

Code:

["HealedBroadcast"] = "<color=olive>{2}</color><color=green> were </color><color=red>healed</color><color=green> for </color><color=red>{0} health</color><color=green> by </color><color=olive>{1}</color>",

Code:

server.Broadcast(lang.GetMessage("HealedBroadcast", this, null));

Code:

at System.String.FormatHelper (System.Text.StringBuilder result, IFormatProvider provider, System.String format, System.Object[] args) [0x00000] in :0
at System.String.Format (IFormatProvider provider, System.String format, System.Object[] args) [0x00000] in :0
at System.String.Format (System.String format, System.Object[] args) [0x00000] in :0
at Oxide.Game.Rust.Libraries.Server.Broadcast (System.String message, System.String prefix, UInt64 userId, System.Object[] args) [0x00000] in :0
at Oxide.Game.Rust.Libraries.Covalence.RustServer.Broadcast (System.String message, System.String prefix, System.Object[] args) [0x00000] in :0
at Oxide.Game.Rust.Libraries.Covalence.RustServer.Broadcast (System.String message) [0x00000] in :0
at Oxide.Plugins.SlayforRust.HealCommand (IPlayer player, System.String command, System.String[] args) [0x00000] in :0
at Oxide.Plugins.SlayforRust.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00000] in :0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00000] in :0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x00000] in :0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00000] in :0 

How can I put in Inside ??
(i'm new and I don't know too much)..

Thanks for all the answers

 

Code:

server.Broadcast(String.Format(lang.GetMessage("HealedBroadcast", this, null)));

Is it like that?