https://community.appian.com/discussions/f/general/1097/i-have-requirement-to-read-an-excel-sheet-and-validate-the-parsed-fieldsI have requirement to read an excel sheet and validate the parsed fields. In that i need to validate a field whether it is a number or not. i did not find anything regarding this check with an expression (ie with expression editor / existing functionsen-USTelligent Community 12https://community.appian.com/thread/3773?ContentTypeID=1Tue, 27 Aug 2013 17:14:24 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:915abbe6-b30e-41e4-ae96-d1812910487esikhivahansOk, I think you have changed your regular expression. Thats fine<div style="clear:both;"></div>https://community.appian.com/thread/3772?ContentTypeID=1Tue, 27 Aug 2013 17:12:26 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:2260e145-f371-4309-9ecc-b8a98856e616saratrkregexmatch(&quot;^\\d+\\.?\\d*$&quot;, pv!inputText) is working for the integers as well as decimals. Thanks for your help.<div style="clear:both;"></div>https://community.appian.com/thread/3766?ContentTypeID=1Tue, 27 Aug 2013 13:43:16 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:1d5c8171-9226-41db-bf53-e6f1eb2ab6f9sikhivahansya ok<div style="clear:both;"></div>https://community.appian.com/thread/3764?ContentTypeID=1Tue, 27 Aug 2013 12:26:47 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:797cf047-42d1-441b-a1d1-dd24f4274601saratrkjust found regexmatch in the functions.will try on that. Thank you<div style="clear:both;"></div>https://community.appian.com/thread/3763?ContentTypeID=1Tue, 27 Aug 2013 12:10:53 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:653004e3-62fe-42f6-b10b-dcd4cbb8fd15sikhivahans@saratrk, still if you have any follow-up questions let me know.<div style="clear:both;"></div>https://community.appian.com/thread/3762?ContentTypeID=1Tue, 27 Aug 2013 12:08:41 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:48f655cc-7a8c-4cc4-8b13-0b38621fa9aesikhivahans@saratrk, thats what i have said in the previous comment, use regexmatch() for this purpose. regexmatch("^[0-9]+(,[0-9]+)*$",ri!yourInputText). But Please note that this regular expression doesn't work (i think it checks only for numbers)for decimals as decimals contain point i.e. dot.<div style="clear:both;"></div>https://community.appian.com/thread/3761?ContentTypeID=1Tue, 27 Aug 2013 12:04:19 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:ed15598d-5456-4af6-ac89-40c391b57f77saratrki have searched in the forum and found<br />return (window.FormAPI.getValue(&quot;myTextField&quot;).id).match(/^[0-9]+(,[0-9]+)*$/)<br />used on the form for the same purpose.<br /><br />But can i use match(/^[0-9]+(,[0-9]+)*$/) in the script task expression editor ?<div style="clear:both;"></div>https://community.appian.com/thread/3753?ContentTypeID=1Tue, 27 Aug 2013 09:52:33 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:b41dcadf-615e-41bb-9a21-555560013317sikhivahans@saratrk, one option is to have a regular expression which checks only for presence of numbers Usage of regexmatch with this expression returns true/false out of it. Still if you find any better way you can proceed with that.<div style="clear:both;"></div>https://community.appian.com/thread/3752?ContentTypeID=1Tue, 27 Aug 2013 09:45:09 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:cdb8c760-2499-4cc7-bbf8-79fc444ca283saratrkHi alex and sikhivahans thank you both for your response.<br /><br />typename(typeof()) is not working in my case. I read the excel file &#39;bill_amount&#39; field in the text format. typename(typeof()) returns me text. if i convert the bill_amount to integer with toInteger() it returns number even if the value is &quot;abcd&quot; so i think i there is no other way than to write a custom function. <br /><br />Let me know if there is any other way.<div style="clear:both;"></div>https://community.appian.com/thread/3741?ContentTypeID=1Mon, 26 Aug 2013 17:57:26 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:9030c1c1-12cd-4b11-8e1f-bc712b3e9fcasikhivahanssaratrk,you could use typeof() or typename(typeof()) functions to check data types.<div style="clear:both;"></div>https://community.appian.com/thread/3740?ContentTypeID=1Mon, 26 Aug 2013 17:52:41 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:44496b0b-51ce-4400-b439-966f217bd438Alex WellerSarat, the expression typeof() will tell you the Appian datatype but if you are parsing excel, I believe you will need to determine the type of the elements of each column beforehand. Please see the relevant shared component for more information on this.<br /><br />You can write your own Appian expression to validate email addresses using a combination of Appian&#39;s useful Text Functions.<div style="clear:both;"></div>