error while install sql server 2012 using powershell

hello all,

I am using below function to install sql server and its not working  can some one help me please 

Function Install-Sql2012
{
param
(
[Parameter()][string]  $Path ,#= (read-host "Enter Installation Binary Path"),
        [Parameter()][string]  $AddSSIS= (read-host "Do u need SSIS Enter 1 for yes o for no") ,
        [Parameter()][string]  $AddSSRS= (read-host "Do u need SSRS Enter 1 for yes o for no") ,
[Parameter()][string]  $InstanceName = (read-host "Enter Instance name"),
[Parameter()][string]  $ServiceAccount= (read-host "Enter Service Account"),
[Parameter()][string]  $ServicePassword= (read-host -assecurestring "Enter Service Account Password") ,
[Parameter()][string]  $AgentAccount=(read-host "Enter Agent Account"),
[Parameter()][string]  $AgentPassword=(read-host "Enter Agent pasword"),
        [Parameter()][string]  $Backuppath= (read-host "Enter Backuppath"),
[Parameter()][string]  $SaPassword= (read-host -assecurestring "Enter SA Account Passowrd"),
        [Parameter()][string]  $SQLTEMPDBDIR= (read-host  "Enter TempDir"),
        [Parameter()][string]  $SQLUSERDBDIR= (read-host  "Enter User Data Directory"),
        [Parameter()][string]  $SQLUSERDBLOGDIR= (read-host  "Enter User Log Directory"),
#[Parameter(Position=5,Mandatory=$false)][string] $LicenseKey,
[Parameter()][string]  $SqlCollation = "SQL_Latin1_General_CP1_CI_AS",
[Parameter()][switch]  $NoTcp,
[Parameter()][switch]  $NoNamedPipes
)

#Build the setup command using the install mode
if ($Path -eq $null -or $Path -eq "")
{
#No path means that the setup is in the same folder
$command = '.\setup.exe /Action="Install"'
}
else
{
#Ensure that the path ends with a backslash
if(!$Path.EndsWith("\"))
{
$Path += "\"
}

$command = $path + 'setup.exe /Action="Install"'
}

#Accept the license agreement - required for command line installs
$command += ' /IACCEPTSQLSERVERLICENSETERMS'

#Use the QuietSimple mode (progress bar, but not interactive)
$command += ' /QS'

#Set the features to be installed
#$command += ' /FEATURES=SQLENGINE,CONN,BC,SSMS,ADV_SSMS'

    If ($AddSSIS -ne '0' -and $AddSSIS -ne '1') {

        throw 'Invalid input. Enter a valid value for SSIS.'
    }

    If ($AddSSRS -ne '0' -and $AddSSRS -ne '1') {

        throw 'Invalid input. Enter a valid value for SSRS.'
    }

   if ($AddSSIS -eq 1 -and $AddSSRS -eq 1)

   {
       $command += ' /FEATURES=SQLENGINE,CONN,BC,SSMS,ADV_SSMS,SSIS,SSRS'
   }

   if ($AddSSIS -eq 1 -and $AddSSRS -eq 0)

   {
   $command += ' /FEATURES=SQLENGINE,CONN,BC,SSMS,ADV_SSMS,SSIS'
   }

   if ($AddSSIS -eq 0 -and $AddSSRS -eq 1)

   {
   $command += ' /FEATURES=SQLENGINE,CONN,BC,SSMS,ADV_SSMS,SSRS'
   }

   if  ($AddSSIS -eq 0 -and $AddSSRS -eq 0)
   {
   $command += ' /FEATURES=SQLENGINE,CONN,BC,SSMS,ADV_SSMS'
   }


#Set the Instance Name
$command += (' /INSTANCENAME="{0}"' -f $InstanceName)

#remove Set the License Key only if a value was provided, otherwise install Evaluation edition
#if ($LicenseKey -ne $null -and $LicenseKey -ne "")
#{
#$command += (' /PID="{0}"' -f $LicenseKey)
#}

    #set reporting to off
    $command += ('/SQMREPORTING="0"')

    #Add Browser Account 
    $command +=('/BROWSERSVCSTARTUPTYPE="Disabled"')

    #Add Backup path 
    $command +=('/SQLBACKUPDIR="{0}"' -f $backuppath)

#Check to see if a service account was specified
if ($ServiceAccount -ne $null -and $ServiceAccount -ne "")
{
#Set the database engine service account
$command += (' /SQLSVCACCOUNT="{0}" /SQLSVCPASSWORD="{1}" /SQLSVCSTARTUPTYPE="Automatic"' -f $ServiceAccount, $ServicePassword)
#Set the SQL Agent service account
$command += (' /AGTSVCACCOUNT="{0}" /AGTSVCPASSWORD="{1}" /AGTSVCSTARTUPTYPE="Automatic"' -f $AgentAccount, $AgentPassword)
}
else
{
#Set the database engine service account to Local System
$command += ' /SQLSVCACCOUNT="NT AUTHORITY\SYSTEM" /SQLSVCSTARTUPTYPE="Automatic"'
#Set the SQL Agent service account to Local System
$command += ' /AGTSVCACCOUNT="NT AUTHORITY\SYSTEM" /AGTSVCSTARTUPTYPE="Automatic"'
}

#Set the server in SQL authentication mode if an SA password was provided
if ($SaPassword -ne $null -and $SaPassword -ne "")
{
$command += (' /SECURITYMODE="SQL" /SAPWD="{0}"' -f $SaPassword)
}

#Add current user as SysAdmin
$command += (' /SQLSYSADMINACCOUNTS="test\ADMIN"')

    #Add Tempdbdata path
$command += (' /SQLTEMPDBDIR="{0}"' -f $SQLTEMPDBDIR)


    #Add Tempdblog path
    $command += (' /SQLTEMPDBLOGDIR="{0}"' -f $SQLTEMPDBDIR)

     #Add UserDBdata path
    $command += (' /SQLUSERDBDIR="{0}"' -f $SQLUSERDBDIR)

     #Add UserDBlog path
    $command += (' /SQLUSERDBLOGDIR="{0}"' -f $SQLUSERDBLOGDIR)


#Set the database collation
$command += (' /SQLCOLLATION="{0}"' -f $SqlCollation)

#Enable/Disable the TCP Protocol
if ($NoTcp)
{
$command += ' /TCPENABLED="0"'
}
else
{
$command += ' /TCPENABLED="1"'
}

#Enable/Disable the Named Pipes Protocol
if ($NoNamedPipes)
{
$command += ' /NPENABLED="0"'
}
else
{
$command += ' /NPENABLED="1"'
}

if ($PSBoundParameters['Debug']) 
{
Write-Output $command
}
else
{
Invoke-Expression $command
}
}



Install-Sql2012

Below is the error i am getting 

PS C:\temp\in> .\Install-Sql2012.ps1
Do u need SSIS Enter 1 for yes o for no: 0
Do u need SSRS Enter 1 for yes o for no: 0
Enter Instance name: MSSQLSERVER
Enter Service Account:
Enter Service Account Password:
Enter Agent Account:
Enter Agent pasword:
Enter Backuppath: "C:\Temp\IN\bck"
Enter SA Account Passowrd: **********
Enter TempDir: "C:\Temp\IN\bck"
Enter User Data Directory: "C:\Temp\IN\bck"
Enter User Log Directory: "C:\Temp\IN\bck"
Microsoft (R) SQL Server 2012 11.00.2100.60
Copyright (c) Microsoft Corporation.  All rights reserved.

The following error occurred:
Instance name is limited to 16 characters. Yours 'MSSQLSERVER/SQMREPORTING=0/BROWSERSVCSTARTUPTYPE=DISABLED/SQLBACKUPDIR=C:\TEMP\IN\BCK' is 85.

Error result: -2054422513
Result facility code: 1420
Result error code: 15

Please review the summary.txt log for further details

Thanks,

Ashwin.