title: How to use constant var in SSIS
body: <p>I have defined a variable as:</p>
  
  <pre><code>   DateSecondsOffset Int default as 1
  </code></pre>
  
  <p>in a SQL Server Integration Service project. I use it as constant.</p>
  
  <p>In a task, I have the following SQL to set another var NextDT:</p>
  
  <pre><code>  SELECT dateadd(s, max(timestamp), 1) DT from myTable
  </code></pre>
  
  <p>I would like to replace the 1 with DateSecondOffset so that I can change it when needed. Can I just type in the var name there or prefix it with @ or something else?</p>