a problem on latent class model & complex sampling data

[Hui Chen]

Hi forks,

I want to use latent class model to analyze complex sampling survey data, and I know the LCA stata plugin have such functions to deal with clusters and weights.
Here's the syntax the user's guide shows

program doLCA, rclass version 11.0
syntax varlist, NClass (integer) ///
Categories (numlist >0 integer) ///
id (variables) ///
GROUPs (variables) ///
weight(varlist) ///
clusters(varlist) ///

But I came up with errors when I ran my syntax.

doLCA belonging happiness safety trust, ///
nclass(2) categories(3 3 3 3) ///
seed(119624) ///
weights (belonging happiness safety trust) ///
clusters (belonging happiness safety trust)

The error was:
belonginghappinesssafetytrust invalid name
r(198);

Does anyone know what the problem was? I really appreciate your help!

Best,
Hui