I can't install Mcreator

This is error log:

   
Executing gradle command: cleanCache clean setupDecompWorkspace --refresh-dependencies
Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. Wszelkie prawa zastrzeľone.
C:\Users\zso14_2\Desktop>cd forge
C:\Users\zso14_2\Desktop\forge>SET "JAVA_HOME=C:\Users\zso14_2\Desktop\jdk32\"
C:\Users\zso14_2\Desktop\forge>SET JAVA_EXE=%JAVA_HOME%\bin\java.exe
C:\Users\zso14_2\Desktop\forge>SET PATH=%JAVA_HOME%\bin\;%PATH%
C:\Users\zso14_2\Desktop\forge>gradlew -Dorg.gradle.jvmargs="-Xms512m -Xmx1024m" cleanCache clean setupDecompWorkspace --refresh-dependencies 
This mapping 'snapshot_20161220' was designed for MC 1.11! Use at your own peril.
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         ForgeGradle 2.2-SNAPSHOT-d13a6c8        
  https://github.com/MinecraftForge/ForgeGradle  
#################################################
               Powered by MCP unknown               
             http://modcoderpack.com             
         by: Searge, ProfMobius, Fesh0r,         
         R4wk, ZeuX, IngisKahn, bspkrs           
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:cleanCache
:clean UP-TO-DATE
:deobfCompileDummyTask
:deobfProvidedDummyTask
:getVersionJson
:extractUserdev
:extractDependencyATs SKIPPED
:extractMcpData
:extractMcpMappings
:genSrgs
:downloadClient
:downloadServer
:splitServerJar
:mergeJars
:deobfMcSRG
Applying SpecialSource...
Applying Exceptor...
:decompileMc
Error occurred during initialization of VM
Could not reserve enough space for 3145728KB object heap
:decompileMc FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':decompileMc'.
> Process 'command 'C:\Users\zso14_2\Desktop\jdk32\bin\java.exe'' finished with non-zero exit value 1
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED
Total time: 5 mins 46.361 secs
C:\Users\zso14_2\Desktop\forge>
Task completed with return code 0 in 349501 milliseconds