AMP Script not rendered in cloud page

Question

I'm trying to insert a personalized content in my cloud page on MC. I need to pass to my landing page the firstname of the customer: In the page code I inserted this AMP SCRIPT Code

%%[ 
var @rs,  @Accrow, @CustomerName, @numRows
Set @rs= RetrieveSalesforceObjects("Account", "FirstName", "Id", "=", 
_subscriberkey)
Set @numRows= RowCount(@rs)
Set @Accrow = Row(@rs, @numRows)
Set @CustomerName = FIELD(@Accrow, 'FirstName')
]%%

Then in text of the page I used Hello %%=v(@CustomerName)=%% I tested this script in email editor and the content rendered fine. When I put this code in the page and saved it the page gave me the 500 internal server error. What am I missing?

Answer 1

I strongly suspect that the issue is that you are using Personalization Strings in on a landing page. These are meant to emails and not landing pages. The renderer is letting you get away with it (probably a bug), but when you "live" test it you get a 500 error (Usually due to malformed Server Side Logic in Marketing Cloud).

I would suggest following:

1. Use either MicrositeURL() or CloudPagesURL() (Salesforce has moved the documentation to this but works the same way as the previous function - for cloud pages) in the links to direct your subscribers to the landing page. This has the advantage of encrypting the data and passing subsciber context data (Email Address, Susbcriberkey and any other fields you want to pass)

<p> <a title="MyPage" href="%%=RedirectTo(CloudPagesURL(77777))=%%" alias="CallItAFriendlyName" conversion="false">Click to Here to Visit My Landing Page</a> </p>

2. On your landing page, use the RequestParameter() function to capture this from the query string.
3. Pass the variable to the RetrieveSalesforceObjects call.

It would look like this:

%%[ 
var @rs,  @Accrow, @CustomerName, @numRows, @Subscriberkey

SET @Subscriberkey = RequestParameter("Subscriberkey")
Set @rs= RetrieveSalesforceObjects("Account", "FirstName", "Id", "=", @Subscriberkey)
Set @numRows= RowCount(@rs)
Set @Accrow = Row(@rs, @numRows)
Set @CustomerName = FIELD(@Accrow, 'FirstName')
]%%

%%=v(@CustomerName)=%%