Typo3 mbl_newsevent post date to URL - typo3

Question

I got an event glossary at my site and the user needs to register for that events with powermail. I post the event title to the URL and then the title gets inserted into a input field at my powermail form. But now I need the date of the event, too.
This is my code so far:
plugin.tt_news.mbl_newsevent{
registrationLink_typolink {
additionalParams.cObject = COA
additionalParams.cObject {
10 = TEXT
10 {
value = &tx_powermail_pi1[veranstaltung]={field:title}
insertData = 1
}
20 = TEXT
20 {
value = {field:tx_mblnewsevent_from}
insertData = 1
stdWrap.date = d.m.Y
stdWrap.outerWrap = &tx_powermail_pi1[datum]=|
}
}
}
output is (URL): http://preview.eloum.de/anmeldung-infotag/?tx_powermail_pi1%5Bveranstaltung%5D=Infotag%20eBusiness-Lotse%20Oberschwaben-Ulm%2028.03.2014&tx_powermail_pi1%5Bdatum%5D=01.01.1970
why 01.01.1970?
the timestamp is correct without that stdWrap.date = d.m.Y
EDIT: got it!
My solutioN:
plugin.tt_news.mbl_newsevent{
registrationLink_typolink {
additionalParams.cObject = COA
additionalParams.cObject {
10 = TEXT
10 {
value = &tx_powermail_pi1[veranstaltung]={field:title}
insertData = 1
}
20 = TEXT
20 {
field = tx_mblnewsevent_from
insertData = 1
date = d.m.Y
wrap = &tx_powermail_pi1[datum]=|
}
}
}}

Answer 1

Can you try
registrationLink_typolink {
...
additionalParams= &tx_powermail_pi1[veranstaltung]={field:title}&tx_powermail_pi1[datum]={field:datetime}
additionalParams.insertData = 1
}
... here's another try. I haven't tested it and I'll have to leave it there. So maybe you have to make some modifications. The general idea is that, as you can't say $date = makereadabledate($timestamp); and then use that in your template (as TS isn't a real programming language), you build the value you want to pass to additionalParams as a so called "cObject". In there, you can parse and wrap it. In the end, you would pass your string for further use to additionalParams. Hope you can make it work!
registrationLink_typolink {
...
additionalParams.cObject = COA
additionalParams.cObject {
10 = TEXT
10 {
value = &tx_powermail_pi1[veranstaltung]={field:title}
insertData = 1
}
20 = TEXT
20 {
value = {field.datetime} // or use "data"
insertData = 1
stdWrap.date = d.m.Y
stdWrap.outerWrap = &tx_powermail_pi1[datum]=|
// outerWrap: maybe not even necessary, the idea is not to interfere with the created string
// cf. http://blog.bartlweb.net/2011/02/die-reihenfolge-der-wichtigsten-wraps-in-typo3/
}
}
}