I think the dde-server of MQ just gives you the ticks.
The high and low that comes by dde are the ones of the day - compare the data window with your sheet.
I wont help to amand the dde-oder. There is a fix windows grammer:
The DDE Application Name is almost always the executable filename for the server
application (without the .EXE extension).
The DDE Topic typically identifies a group or
category of data in the server application and each data item that a server can provide
has a unique DDE Item Name.
Thus, the Application Name, Topic, and Item Name identify the
exact source of the data in a server application that is to be linked.
(Similar to a
telephone number with the three parts: Area Code, Exchange and Number.)
So you only can get what the dde server offers and the MT4 does not offer toooo much.
I think one has to build one's own 1h and 4h bars :( which will be a quite difficult sheet..