Mod Failure cause of {display:{Name:"Rab"}}

this is my first time writing Topic in forum, 

and i'm using Mcreator having so much wonderful time, 

problem is: i'm trying to review in survival map and didn't want to find horse everytime for speed up game review, 

so when i do : /summon EntityHorse ~ ~1 ~-3 {Tame:1,Saddle:1,Variant:770} which is perfectly fine, 

but when i wanna give him name by /summon EntityHorse ~ ~1 ~-3 {Tame:1,Saddle:1,Variant:770,CustomName:"Rabel"}   (by the way, her name is rabel)

when i type this command in minecraft which is fine, 

it's always fail in my mcreator, i don't know why i can't execute this command in mod item. 

E:\MCreator163\forge\build\sources\java\mod\mcreator\mcreator_rabel.java:155: error: ')' expected
if(entity instanceof EntityPlayer){MinecraftServer minecraftserver = MinecraftServer.getServer();if(minecraftserver!=null)minecraftserver.getCommandManager().executeCommand((EntityPlayer)entity, "summon EntityHorse ~ ~1 ~-3 {Tame:1,Saddle:1,Variant:770,CustomName:"Rabel"}");}
                                                                                                                                                                                                                                                                         ^
E:\MCreator163\forge\build\sources\java\mod\mcreator\mcreator_rabel.java:155: error: not a statement
if(entity instanceof EntityPlayer){MinecraftServer minecraftserver = MinecraftServer.getServer();if(minecraftserver!=null)minecraftserver.getCommandManager().executeCommand((EntityPlayer)entity, "summon EntityHorse ~ ~1 ~-3 {Tame:1,Saddle:1,Variant:770,CustomName:"Rabel"}");}
                                                                                                                                                                                                                                                                              ^
E:\MCreator163\forge\build\sources\java\mod\mcreator\mcreator_rabel.java:155: error: ';' expected
if(entity instanceof EntityPlayer){MinecraftServer minecraftserver = MinecraftServer.getServer();if(minecraftserver!=null)minecraftserver.getCommandManager().executeCommand((EntityPlayer)entity, "summon EntityHorse ~ ~1 ~-3 {Tame:1,Saddle:1,Variant:770,CustomName:"Rabel"}");}
                                                                                                                                                                                                                                                                                 ^
3 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileJava'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

this is Gradle Log.