Added Type to ModifyChannelPermissions

src/Discord.Net/API/Rest/ModifyChannelPermissionsParams.cs

@@ -6,9 +6,10 @@ namespace Discord.API.Rest
     [JsonObject(MemberSerialization = MemberSerialization.OptIn)]
     public class ModifyChannelPermissionsParams
     {
+        [JsonProperty("type")]
+        public string Type { internal get; set; }
         [JsonProperty("allow")]
         public ulong Allow { internal get; set; }
-
         [JsonProperty("deny")]
         public ulong Deny { internal get; set; }
     }

src/Discord.Net/Rest/Entities/Channels/GuildChannel.cs

@@ -108,13 +108,13 @@ namespace Discord.Rest
         
         public async Task AddPermissionOverwriteAsync(IUser user, OverwritePermissions perms)
         {
-            var args = new ModifyChannelPermissionsParams { Allow = perms.AllowValue, Deny = perms.DenyValue };
+            var args = new ModifyChannelPermissionsParams { Allow = perms.AllowValue, Deny = perms.DenyValue, Type = "member" };
             await Discord.ApiClient.ModifyChannelPermissionsAsync(Id, user.Id, args).ConfigureAwait(false);
             _overwrites.Add(new Overwrite(new API.Overwrite { Allow = perms.AllowValue, Deny = perms.DenyValue, TargetId = user.Id, TargetType = PermissionTarget.User }));
         }
         public async Task AddPermissionOverwriteAsync(IRole role, OverwritePermissions perms)
         {
-            var args = new ModifyChannelPermissionsParams { Allow = perms.AllowValue, Deny = perms.DenyValue };
+            var args = new ModifyChannelPermissionsParams { Allow = perms.AllowValue, Deny = perms.DenyValue, Type = "role" };
             await Discord.ApiClient.ModifyChannelPermissionsAsync(Id, role.Id, args).ConfigureAwait(false);
             _overwrites.Add(new Overwrite(new API.Overwrite { Allow = perms.AllowValue, Deny = perms.DenyValue, TargetId = role.Id, TargetType = PermissionTarget.Role }));
         }