spinal cord injury bladder problem

[lienrehab]

female patient 50 age, ASIA C, use CIC 4times/day, use oxybutiline 20mg/day, but she makes water 12times/day, V each time : 100- 150ml. residual water in bladder about 100-120ml, and sometime, she has urge a void.
How can i treat for bladder problem