I'm getting HRESULT: 0x800A03EC

On this statement: cfDataBar =
osheet.Range(RangeText).FormatConditions.AddDataba r

with these values in RangeText:
B14,D14,F14,H14,J14,L14,N14,P14,R14,T14,V14,X14,Z1 4,AB14,AD14,AF14,AH14,AJ14,AL14,AN14,AP14,AR14,AT1 4,AV14,AX14,AZ14,BB14,BD14,BF14,BH14,BJ14,BL14,BN1 4,BP14,BR14,BT14,BV14,BX14,BZ14,CB14,CD14,CF14,CH1 4,CJ14,CL14,CN14,CP14,CR14,CT14,CV14,CX14,CZ14,DB1 4,DD14,DF14,DH14,DJ14,DL14,DN14,DP14

I use this code all the time without any problems but the number of items in
RangeText builds dynamically and this one is quite larger than any other one
I build.

Thanks in advance,
Steve