Conversion from String to floating point from PI to SAP

Hi Experts,

I have a scenario as below .

1. PI uses proxy scenario and sends one of the field as string

2. SAP consumes the same in some l_recorded_value of type FLTP_INOUT which holds char 22

3. Problem is as same value been passed to standard function module as below which throughs an error stating 'Float point conversion error'

4. Need to know how to achieve the same so that either i can ask PI team to make float point declaration from string....or i convert it internally so that below FM will not go for error