to the meridian $\mu _{2}$ (see Figure \[fig:triple\]). This means $Y_{\beta ,\gamma }=\# ^{2}S^{1}\times S^{2}$ and $Y_{\alpha ,\gamma }=-L(m,1)\# S^{1}\times S^{2}$.

Filling the second boundary component $\# ^{2}S^{1}\times S^{2}$ by $\# ^{2}S^{1}\times B^{3}$ we get the surgery cobordism $W$ from ${Y_{m,n}}$ to $ -L(m,1)\# S^{1}\times S^{2}$. The cobordism $W$ equipped with a $\sp $ structure $\mathfrak{s}$ induces a map $$F_{W,\mathfrak{s}}\colon \widehat{HF}({Y_{m,n}})\to \widehat{HF}(-L(m,1)\# S^{1}\times S^{2})\;.$$ Under this map, the absolute grading of a generator $\zeta \in \widehat{HF}({Y_{m,n}})$ is changed by [@OS4 Formula (4)]:

[1]{} \[grading\] & (F\_[W,]{}())-()=.

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