https://community.qlik.com/t5/Talend-Studio/string-compare/m-p/2252974#M36457 Hey. <BR />Im using tmap expression to compare 2 fields from different files. For example from texcel input and toracleinput. and i wat to copy the record if name field from toracleinput == name field from texcel input. I tryed to use some expressions but it always gives me an error: cannot convert boolean to string. Any suggestion? <BR />Thank you! Thu, 05 Mar 2015 16:01:14 GMT Anonymous 2015-03-05T16:01:14Z https://community.qlik.com/t5/Talend-Studio/string-compare/m-p/2252974#M36457 Hey. <BR />Im using tmap expression to compare 2 fields from different files. For example from texcel input and toracleinput. and i wat to copy the record if name field from toracleinput == name field from texcel input. I tryed to use some expressions but it always gives me an error: cannot convert boolean to string. Any suggestion? <BR />Thank you! Thu, 05 Mar 2015 16:01:14 GMT https://community.qlik.com/t5/Talend-Studio/string-compare/m-p/2252974#M36457 Anonymous 2015-03-05T16:01:14Z https://community.qlik.com/t5/Talend-Studio/string-compare/m-p/2252975#M36458 Sounds like you want a filter.&nbsp; Have you reviewed the filter and reject tutorial?<BR /><A href="https://www.talendforge.org/tutorials/tutorial.php?language=english&amp;idTuto=9" rel="nofollow noopener noreferrer">https://www.talendforge.org/tutorials/tutorial.php?language=english&amp;idTuto=9</A> Thu, 05 Mar 2015 22:08:38 GMT https://community.qlik.com/t5/Talend-Studio/string-compare/m-p/2252975#M36458 Anonymous 2015-03-05T22:08:38Z