Como instalar o JRE com o Inno Setup e istool?

Pessoal, O script abaixo não esta instalando o jre, não da erro,roda aparentemente tudo normal, onde esta erro no script?

[Setup]
AppName=JRE Setup
AppVersion=0.1
DefaultDirName=JRE Setup

[Languages]
Name: english; MessagesFile: compiler:Default.isl

[Files]
Source: jre-8u101-windows-x64 .exe; DestDir: {app} C:; DestName: JREInstall.exe; Check: IsWin64 AND InstallJava()
Source: jre-8u101-windows-i586.exe; DestDir: {app} C:; DestName: JREInstall.exe; Check: (NOT IsWin64) AND InstallJava()

[Run]
Filename: {app} C:\jre-8u101-windows-i586.exe; Parameters: /s; Flags: nowait runhidden runascurrentuser; Check: InstallJava()

[Code]
procedure DecodeVersion (verstr: String; var verint: array of Integer);
var
i,p: Integer; s: string;
begin
// initialize array
verint := [0,0,0,0];
i := 0;
while ((Length(verstr) > 0) and (i < 4)) do
begin
p := pos (’.’, verstr);
if p > 0 then
begin
if p = 1 then s:= ‘0’ else s:= Copy (verstr, 1, p - 1);
verint[i] := StrToInt(s);
i := i + 1;
verstr := Copy (verstr, p+1, Length(verstr));
end
else
begin
verint[i] := StrToInt (verstr);
verstr := ‘’;
end;
end;

end;

function CompareVersion (ver1, ver2: String) : Integer;
var
verint1, verint2: array of Integer;
i: integer;
begin

SetArrayLength (verint1, 4);
DecodeVersion (ver1, verint1);

SetArrayLength (verint2, 4);
DecodeVersion (ver2, verint2);

Result := 0; i := 0;
while ((Result = 0) and ( i < 4 )) do
begin
if verint1[i] > verint2[i] then
Result := 1
else
if verint1[i] < verint2[i] then
Result := -1
else
Result := 0;
i := i + 1;
end;
end;

function InstallJava() : Boolean;
var
ErrCode: Integer;
JVer: String;
InstallJ: Boolean;
begin
RegQueryStringValue(HKLM, ‘SOFTWARE\JavaSoft\Java Runtime Environment’, ‘CurrentVersion’, JVer);
InstallJ := true;
if Length( JVer ) > 0 then
begin
if CompareVersion(JVer, ‘1.8’) >= 0 then
begin
InstallJ := false;
end;
end;
Result := InstallJ;
end;
E