So the "Transfer Player Float" command only accepts number values and not code, I can make it work that way in the future.
The Disable Rounding, is on the DEFAULT transfer commad, where you disable the rounding -> record the position x, and y to their own variables, then you perform transfer from the default command built into MV/MZ and use the appropriate variables for x and y. ^^ If this still does not work let me know, and i can debug this , but it worked the last i tested, however a lot has changed since then.. so it may have broke somewhere down the line ^^; apologies.
As for the character not moving accordingly on looping maps, this is... somewhat of a known issue, I fixed this partially, for the simple "setDestination"( this applies to basic move commands in move route ), but I have not yet adressed this for path finding, which is what I assume you are using?
Also your english is good enough for me to understand, so no worries at all! and this is no bother! I am here to help :)