<p>I pushed a patch trying to catch such situation. If you are not sure that the cmd parameter has or not <code>%s</code> or <code>%b</code>, then you should use the redis_cmd with more params, like:</p>
<pre><code>redis_cmd(..., "SETEX %s 21600 %s", "SETEX ACTIVECHANNELS_$ci", "$vn(variable2)", ...);
</code></pre>

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