{

}

Now you can run command line: -a "!!BaseSourceDir!c:\\Projects\\SSO\\Implementation" or in template

<#@ InstallerDefinition processor="InstallerDefinitionDirectiveProcessor" requires="fileName='..\CustomPTCustomizationInstaller.pkgsetup'" provides="installerPackageModel=InstallerDefinition;BaseSourceDir=c:\\projects\\sso\\"#>

Also, I add this code to have all parameters as property of the TextTransformationTemplate:

protected override void GenerateTransformCode(string directiveName, StringBuilder codeBuffer, System.CodeDom.Compiler.CodeDomProvider languageProvider, IDictionary<string, string> requiresArguments, IDictionary<string, string> providesArguments)

base.GenerateTransformCode(directiveName, codeBuffer, languageProvider, requiresArguments, providesArguments);

if ((StringComparer.InvariantCultureIgnoreCase.Compare(directiveName, "InstallerDefinition") == 0) && (languageProvider != null))

List<System.CodeDom.CodeMemberProperty> properties = new List<CodeMemberProperty>();

foreach (String argName in providesArguments.Keys)

// Create a property for the Model that delay-loads the model

System.CodeDom.CodeMemberProperty property= new System.CodeDom.CodeMemberProperty();

property.Name = argName;

property.Type = new System.CodeDom.CodeTypeReference(typeof(String));

property.Attributes = System.CodeDom.MemberAttributes.Public;

property.HasSet = false;

property.HasGet = true;

property.GetStatements.Add(new CodeMethodReturnStatement(new System.CodeDom.CodePrimitiveExpression(providesArguments[argName])));

properties.Add(property);

CodeGeneratorOptions options1 = new CodeGeneratorOptions();

options1.BlankLinesBetweenMembers = true;

options1.IndentString = "\t";

options1.VerbatimOrder = true;

options1.BracingStyle = "C";

using (StringWriter writer1 = new StringWriter(codeBuffer, CultureInfo.InvariantCulture))

foreach(System.CodeDom.CodeMemberProperty p in properties)

languageProvider.GenerateCodeFromMember(p, writer1, options1);