Trouble with RG line

[FGponce]

Hi,
am trying to add RG line to a Sam made after bwa alignment prior to GATK.

This is the command:
bwa sampe -f OD.sam -r "@RG\tID:<ODexome>\tLB:<ODexome>\tSM:<ODexome>\tPL:ILLUMINA" hg19 OD_R1.sai OD_R2.sai SampleR1_001.fastq SampleR2_001.fastq

BUT get this error!

[bwa_sai2sam_pe] malformated @RG line

Any ideas?

Cheers,

FGP