Mstab Can the number of lines to assign geotextile properties be added

[Bijengsi]

i am working on a dike design on Mstab which has its core composed of Goetube sousages. I have modeled the shapes of the geotubes in the dike and have tried to assign the geotextile properties to the outline shape of the geotube but after assigning the properties to 10 of the lines the programs say i have reached the maximum number of item. For my design to be complete, i still need to assign this properties to 21 more lines. If any body has and idea of how to handle this problem please do enlighten me.

Thanks in advance

Bijengsi