When using a multiple "if-then-else" statement it will stop at the first if condition it meets that it can satisfy. It will not continue through the statement to see if it meets anymore conditions.
I am not exactly sure what you are trying to ultimately accomplish but, if all of your {CD_10_ttx.Projects~Udf_ccd_XX} fields are in the same row of data you can try to make 14 seperate detail sections and 14 formulas, one per condition and place each formula on a seperate detail section. Each formula will run independent of the others. Your formula will be something like:
If {CD_10_ttx.Projects~Udf_ccd1} = True then "1 "
else ""