Dynamic URLs AMP script

Question

We are already using AMP to create dynamic URL. We are also doing A/B tests and I want to add the variant of a contentblock into the dynamic URL. Below you see the current AMP we're using to create the URLs. I add @CID_code to every URL.

The new variant needs to have a code to add to the URL like this: CID=EML_NB_BL_A_20210111 or CID=EML_NB_BL_B_20210111.

I wanted to add TestA or TestB to the name of the contentblock and catch that with AMP, but that's not possible if I look into the development guides. Any ideas how to fix this?

%%[
/* UTM code genereren */
SET @hp                = AttributeValue("hp")
SET @date_today        = Format(Now(), "yyyyMMdd")

IF @hp == "bl"         THEN
    SET @CID_code = Concat("CID=EML_NB_BL_", @date_today)

ELSEIF @hp == "kk"           THEN
    SET @CID_code = Concat("CID=EML_NB_L_KK_", @date_today)

ELSEIF @hp == "gr"          THEN
    SET @CID_code = Concat("CID=EML_NB_L_GR_", @date_today)

ELSEIF @hp == "vv"  THEN
    SET @CID_code = Concat("CID=EML_NB_L_VV_", @date_today)

ELSEIF Empty(@hp)                     THEN
    SET @CID_code = Concat("CID=EML_NB_NL_", @date_today)

ENDIF
]%%

Answer 1

If you are trying to define the testA / testB part in the name of the content block, It sounds to me like you could also just do it at the beginning of the block content. I think you just need to introduce a variable, let's call it "@variant", and put a slightly different ampscript definition into your two content blocks:

AMPScript for Variant A:

%%[
SET @variant = "_testA"
]%%

AMPScript for Variant B

%%[
SET @variant = "_testB"
]%%

and then you use this in your parameter definition (it's the same in both A and B, but has to be below the above code snippet so it understands "@variant"):

%%[
/* UTM code genereren*/

SET @hp                = AttributeValue("hp")
SET @date_today        = Format(Now(), "yyyyMMdd")

IF @hp == "bl"         THEN
    SET @CID_code = Concat("CID=EML_NB_BL_", @date_today,@variant)

ELSEIF @hp == "kk"           THEN
    SET @CID_code = Concat("CID=EML_NB_L_KK_", @date_today,@variant)

ELSEIF @hp == "gr"          THEN
    SET @CID_code = Concat("CID=EML_NB_L_GR_", @date_today,@variant)

ELSEIF @hp == "vv"  THEN
    SET @CID_code = Concat("CID=EML_NB_L_VV_", @date_today,@variant)

ELSEIF Empty(@hp)                     THEN
    SET @CID_code = Concat("CID=EML_NB_NL_", @date_today,@variant)

ENDIF
]%%

does this help?

Answer 2

I have not tested this yet, but as the AB Testing block in Content Builder uses Impression Regions on each block, you might try using the personalization string %%_ImpressionRegionName%% inside your UTM attribute to differentiate which block it is coming from.

For example, something like:

%%[
/* UTM code genereren */
SET @hp                = AttributeValue("hp")
SET @date_today        = Format(Now(), "yyyyMMdd")
SET @ir                = _ImpressionRegionName

IF @hp == "bl"         THEN
    SET @CID_code = Concat("CID=EML_NB_BL_", @date_today,"_",@ir)

ELSEIF @hp == "kk"           THEN
    SET @CID_code = Concat("CID=EML_NB_L_KK_", @date_today,"_",@ir)

ELSEIF @hp == "gr"          THEN
    SET @CID_code = Concat("CID=EML_NB_L_GR_", @date_today,"_",@ir)

ELSEIF @hp == "vv"  THEN
    SET @CID_code = Concat("CID=EML_NB_L_VV_", @date_today,"_",@ir)

ELSEIF Empty(@hp)                     THEN
    SET @CID_code = Concat("CID=EML_NB_NL_", @date_today,"_",@ir)

ENDIF
]%%

I added the impressionRegion name to the end, but you can move that wherever you want. If that name is too long, there is an %%_ImpressionRegionID%% as an option or you can assign your own flag using a conditional statement in AMPScript before inserting on the string.

E.g.

SET @ir = _ImpressionRegionName

IF @ir == "myAContentBlockName" THEN
  SET @block = "A"
IF @ir == "myBContentBlockName" THEN
  SET @block = "B"
ELSE
  SET @block = "NA"
ENDIF

/* Then use the following to concat it in
  SET @CID_code = Concat("CID=EML_NB_NL_", @date_today,"_",@block)
*/