invalid command name in TCL
<p>invalid command name "if{0}{"</p>

<p><img src="https://i.stack.imgur.com/3jMUM.png" alt="tcl script output"></p>

<p><img src="https://i.stack.imgur.com/Hw58q.png" alt="tcl script"></p>

<p>Giving me an error, for that I have find how many cell in the file.
Where am I making a mistake?</p>

<p>Update::::::::::::::::::::::::::::::::::::::::::::::::::::::::</p>

<p>I am having an issue while sorting an array...
It says
<a href="https://i.stack.imgur.com/imJmh.png" rel="nofollow">enter image description here</a></p>

<p>Since the last element is integer, still it says "expected integer but got...
Where am i making mistake?</p>