The error came from the way i wrote the "variables". Word 2007 write several tags that you can not see... and the phpdocx library can confuse with them.
The solution is write the "variable" (in the template docx) in "one step" including $ symbols... without erase.. or copy... or replace any....."all in one step".
Remember, be careful writing your variables in the docx template....
THANKS TO PHPDOCX TECH. A great job and great people too.