{"id":31328,"date":"2018-04-21T15:47:45","date_gmt":"2018-04-21T15:47:45","guid":{"rendered":"https:\/\/ampscript.guide\/controlling-expression-evaluation\/"},"modified":"2021-04-06T01:18:18","modified_gmt":"2021-04-06T01:18:18","slug":"controlling-expression-evaluation","status":"publish","type":"post","link":"https:\/\/ampscript.guide\/controlling-expression-evaluation\/","title":{"rendered":"Controlling Expression Evaluation"},"content":{"rendered":"<h2>Controlling Expression Evaluation<\/h2>\n<p>Parentheses can be used to control the order of operation for evaluating expressions.<\/p>\n<h3>Example 1<\/h3>\n<p>In this scenario, free shipping should only be offered to bronze or silver members who spend over $500.<\/p>\n<pre><code>%%[\n\nvar @statusTier, @amount, @freeShipping\nset @statusTier = \"Bronze\"\nset @amount = 300\n\nif @statusTier == \"Bronze\" or @statusTier == \"Silver\" and @amount &gt; 500 then\n  set @freeShipping = true\nendif\n\n]%%\n\n&lt;p&gt;You %%=Iif(@freeShipping == true, \"qualify\",\"do not qualify\")=%% for free shipping.&lt;\/p&gt;<\/code><\/pre>\n<h4>Output<\/h4>\n<p>The join operators in the above <code>if<\/code> statement will be evaluated as a single expression and will produce the following result:<\/p>\n<pre><code>&lt;p&gt;You qualify for free shipping.&lt;\/p&gt;<\/code><\/pre>\n<h3>Example 2<\/h3>\n<p>By modifying the first example to include parentheses, the expression evaluation can be controlled into two expressions.<\/p>\n<div class=\"rcp_restricted rcp_paid_only\"><div>\n\n\n\t\n\t<form id=\"rcp_login_form\"  class=\"rcp_form\" method=\"POST\" action=\"https:\/\/ampscript.guide\/wp-json\/wp\/v2\/posts\/31328\/\">\n\n\t\t\n\t\t<fieldset class=\"rcp_login_data\">\n\t\t\t<p>\n\t\t\t\t<label for=\"rcp_user_login\">Username or Email<\/label>\n\t\t\t\t<input name=\"rcp_user_login\" id=\"rcp_user_login\" class=\"required\" type=\"text\"\/>\n\t\t\t<\/p>\n\t\t\t<p>\n\t\t\t\t<label for=\"rcp_user_pass\">Password<\/label>\n\t\t\t\t<input name=\"rcp_user_pass\" id=\"rcp_user_pass\" class=\"required\" type=\"password\"\/>\n\t\t\t<\/p>\n\t\t\t\t\t\t<p>\n\t\t\t\t<input type=\"checkbox\" name=\"rcp_user_remember\" id=\"rcp_user_remember\" value=\"1\"\/>\n\t\t\t\t<label for=\"rcp_user_remember\">Remember me<\/label>\n\t\t\t<\/p>\n\t\t\t<p class=\"rcp_lost_password\"><a href=\"\/wp-json\/wp\/v2\/posts\/31328?rcp_action=lostpassword\">Lost your password?<\/a><\/p>\n\t\t\t<p>\n\t\t\t\t<input type=\"hidden\" name=\"rcp_action\" value=\"login\"\/>\n\t\t\t\t<input type=\"hidden\" name=\"rcp_redirect\" value=\"https:\/\/ampscript.guide\/wp-json\/wp\/v2\/posts\/31328\/\"\/>\n\t\t\t\t<input type=\"hidden\" name=\"rcp_login_nonce\" value=\"0c0230e06d\"\/>\n\t\t\t\t<input id=\"rcp_login_submit\" class=\"rcp-button\" type=\"submit\" value=\"Login\"\/>\n\t\t\t<\/p>\n\t\t\t\t\t<\/fieldset>\n\n\t\t\n\t<\/form>\n<br \/>\nNot a subscriber? <a href=\"\/subscriptions\/subscribe\/\">Subscribe now<\/a>.\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Controlling Expression Evaluation Parentheses can be used to control the order of operation for evaluating expressions. Example 1 In this scenario, free shipping should only be offered to bronze or silver members who spend over $500. %%[ var @statusTier, @amount, @freeShipping set @statusTier = &#8220;Bronze&#8221; set @amount = 300 if @statusTier == &#8220;Bronze&#8221; or @statusTier [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v14.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The AMPscript Guide - Controlling Expression Evaluation<\/title>\n<meta name=\"robots\" content=\"index, follow\" \/>\n<meta name=\"googlebot\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta name=\"bingbot\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ampscript.guide\/controlling-expression-evaluation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The AMPscript Guide - Controlling Expression Evaluation\" \/>\n<meta property=\"og:description\" content=\"Controlling Expression Evaluation Parentheses can be used to control the order of operation for evaluating expressions. 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