<html><head></head><body><div class="ydp12152f82yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;">Hi Guys,</div><div class="ydp12152f82yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><br></div><div class="ydp12152f82yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;">I have a check for NULL for $tu var in the script, But when the value is missing I'm getting the following error.</div><div class="ydp12152f82yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><br></div><div class="ydp12152f82yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><span>ERROR:core:comp_scriptvar: cannot get left var value<br><br></span><div><span>WARNING:core:do_action: error in expression at /etc/opensips/opensips.cfg:806</span></div><div><span><br></span></div><div><span>and line 806 contains following.</span></div><div><span><br></span></div><div><span><span> if ( $tu != NULL ) {<br> remove("location","$tu");<br> }<br><br></span></span><div><span>any suggestion on how to test for NULL values without getting above error. I'm using opensips 2.3.5</span></div><div><span><br></span></div><div><span></span><br></div><div><br></div></div></div></body></html>