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Set Platform Preferences using a variable

All, 

     I am trying to set platform preferences dynamically based on User Input collected using a UI. 

     Essentially, the user specifies which Matlab version is installed on their machine and I am using that to construct a 32-bit and a 64-bit path to the root variable for Matlab on the users machine.  However, this repeatedly results in an error: 

 

Unexpected "\MATLAB\R2018a\". Perhaps there is a missing "," or ")".
Trying to parse arguments of function "MATLABROOT32".

 

        Any help or advice is appreciated. 

 

</CODE><CODE class=" language-jsl"></CODE></PRE><P>&nbsp;</P></LINGO-BODY><LINGO-SUB id="lingo-sub-218435" slang="en-US">Re: Set Platform Preferences using a variable</LINGO-SUB><LINGO-BODY id="lingo-body-218435" slang="en-US"><P>Thanks to&nbsp;<A href="https://community.jmp.com/t5/user/viewprofilepage/user-id/4881" target="_blank">@gblatz</A>&nbsp;, the following works:&nbsp;</P><P>&nbsp;</P><PRE><CODE class=" language-jsl">Eval(
 Parse(
  Eval Insert(
    " Platform Preferences( PathVar( MATLABROOT32( \!"^matlab_32bit_path^ \!" ), MATLABROOT( \!"^matlab_64bit_path^\!" ) ) );"
      )
      )
   );user_matlab_ver = '2018a' ; // for example <BR />matlab_32bit_path = "C:\Program Files (x86)\MATLAB\R2018a\";
matlab_64bit_path = "C:\Program Files\MATLAB\R2018a\";

Eval( Parse( Eval Insert("\[ Platform Preferences( PathVar( MATLABROOT32( ^matlab_32bit_path^ ), MATLABROOT( ^matlab_64bit_path^ ) ) );]\" ) ) );

ConnectToMatlab = Expr(
 matlab_conn = MATLAB Connect();
 matlab_conn_flag = matlab_conn << Is Connected;
);

ConnectToMatlab;

Re: Set Platform Preferences using a variable

The issue you had with the quoted strings is one of the reasons I usually prefer Eval(Substitute()) or Eval(EvalExpr())

 

Eval(
 Substitute(
  Expr(
   Platform Preferences(
    PathVar(
     MATLABROOT32( "DV_ML32" ),
     MATLABROOT( "DV_ML64" )
    )
   )
  ), 
  "DV_ML32", matlab_32bit_path, 
  "DV_ML64", matlab_64bit_path
  
 )
 
);