Generalhttps://www.infopathdev.com:443/forums/41.aspxIf you're not sure where to ask your question, ask it here. If necessary, our moderators will make sure it gets classified in the correct board.enCommunityServer 2007 SP3 (Build: 31118.962)Re: Cascading drop down problemhttps://www.infopathdev.com:443/forums/thread/97844.aspxMon, 09 Jun 2014 01:06:25 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:97844donstephen0https://www.infopathdev.com:443/forums/thread/97844.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=41&PostID=97844<p>Hello,</p><p>Welcome to InfoPathDev.</p><p>A quick solution to prevent&nbsp;the user from changing the value on the first drop-down list is by adding a <strong>Formatting</strong> rule. In InfoPath 2013, click on the first drop-down control, under the home tab click <strong>Managed Rules</strong>. At the right portion of the page, add a new <strong>Formatting</strong> rule with&nbsp;a condition that the&nbsp;<strong>2nd drop-down </strong>field is not blank. At the bottom portion of the rule, tick the check box which says <strong>Disable this control</strong>. Hope this helps.</p>Cascading drop down problemhttps://www.infopathdev.com:443/forums/thread/97843.aspxSat, 07 Jun 2014 15:16:11 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:97843Captain Coins0https://www.infopathdev.com:443/forums/thread/97843.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=41&PostID=97843Hi, I am a newbie to InfoPath, but have found this application incredibly useful and easy to use, shame 2013 is to be the last version, especially as I have only just discovered it. Anyway, I have created a form which I am quite proud of I have created two drop down fields that are cascading drop downs, so the selection in field 2 is dependant on the value selected in field 1 using a filter. However, although this works perfectly, if, after having selected the value in field 2, I can go back to field 1 and change it to another value, even though it does not relate to the data in field 2 (if that all makes sense). Does anyone know how I can prevent the user from changing the value in field 1 if the value in field 2 has already been selected? Alternatively, is there a way of triggering a popup message to say that the two values do not match?